Answers
D. [tex] ({ - 8})^{2} - 9 + ( - 7)[/tex] ✅
Step-by-step explanation:
[tex] {( - 32 \div4 })^{2} - 9 + ( - 7) \\ \\ = ({ - 8})^{2} - 9 +(- 7 )\\ \\=64-9-7\\\\ = 64 - 16 \\ \\ = 48[/tex]
Note:-
[tex]\sf\red{PEMDAS\: rule.}[/tex]
P = Parentheses
E = Exponents
M = Multiplication
D = Division
A = Addition
S = Subtraction
[tex]\sf\red{(+\:x\:-)\:=\:-}[/tex]
[tex]\sf\red{(-\:x\:-)\:=\:+}[/tex]
[tex]\bold{ \green{ \star{ \orange{Mystique35}}}}⋆[/tex]
Related Questions
Please help me find x and y. Give a real answer that is correct.
Answers
Answers:
x = 5/2 = 2.5
y = 10
============================================
Explanation:
Focus on the smallest triangle and the medium sized triangle. We can form the proportion 2/4 = x/5 by dividing the corresponding sides together.
Solving for x leads us to the following
2/4 = x/5
2*5 = 4*x
10 = 4x
4x = 10
x = 10/4
x = 5/2
x = 2.5
-----------------
Now focus on the medium sized triangle and the largest triangle. We'll use the same idea as before
4/8 = 5/y
4y = 8*5
4y = 40
y = 40/4
y = 10
Note how each horizontal line is a midsegment, which means that jumping from y = 10 to 5 is us taking half of that value. Then going from 5 to x = 5/2 = 2.5 is another step of cutting in half.
4x2 + 3 = -7x
solve for x
x=_,_
Answers
[tex]\displaystyle\bf 4x^2+3=-7x\\4x^2+7x+3=0 \\\\D=49-48=1 \\x_1=\frac{-7+1}{8} =-\frac{3}{4} \\x_2=\frac{-7-1}{8} =-1\\\\Answer: \boxed{ x_1=-\frac{3}{4} \quad ; \quad x_2=-1}[/tex]
Patricia y Armando tienen $220 entre los dos. Patricia le da a Armando $30 de tal forma que ambos tendrán la misma cantidad de dinero. ¿CUANTO DINERO TIENE CADA UNO?
Answers
Answer:
Patricia's amount of money = $125
Armando's amount of money = $95
Step-by-step explanation:
Given:
Total amount of money = $220
Patricia have $30 more than Armando
Find:
Amount of money each have.
Computation:
Assume;
Patricia's amount of money = a
So,
Armando's amount of money = a - 30
So,
a + a - 30 = 220
2a - 30 = 220
2a = 250
a = 125
Patricia's amount of money = $125
Armando's amount of money = 125 - 30
Armando's amount of money = $95
A shop owner spent $540 to purchase a stock of computer keyboards. If the price of each keyboard had been reduced by $2, he could have bought 3 more keyboards. Find the price of one keyboard.
Answers
Answer:
Price before discount = $20 per keyboard
Price after discount = $18 per keyboard
Before the discount, you can buy 27 keyboards. After the discount, you can buy 30 keyboards.
===============================================
Work Shown:
k = cost of one keyboard before the price reduction
540/k = amount of keyboards purchased before the price reduction
k-2 = cost of one keyboard after the price reduction
540/(k-2) = amount of keyboards purchased after the price reduction
540/(k-2) = (540/k) + 3
--------------
If you multiply both sides by the LCM k(k-2), then you'll clear out the fractions and we can solve for k like so
540/(k-2) = (540/k) + 3
540k = 540(k-2) + 3k(k-2)
540k = 540k - 1080 + 3k^2 - 6k
0 = 540k - 1080 + 3k^2 - 6k - 540k
0 = 3k^2 - 6k - 1080
3k^2 - 6k - 1080 = 0
3(k^2 - 2k - 360) = 0
k^2 - 2k - 360 = 0
(k - 20)(k + 18) = 0
k-20 = 0 or k+18 = 0
k = 20 or k = -18
We ignore the negative result because a negative price doesn't make sense.
--------------
If k = 20, then
540/k = 540/20 = 27
Meaning that you can buy 27 keyboards before the price reduction
In other words, (27 keyboards)*(20 dollars per keyboard) = 540 dollars total.
After the price reduction, the cost per keyboard is now k-2 = 20-2 = 18
We can now buy 540/(k-2) = 540/18 = 30 keyboards, which is an increase of 30-27 = 3 extra keyboards. This helps confirm we have the correct answer.
Answer:
$20
Step-by-step explanation:
X: the price of a keyboard
Y: number of keyboards to buy (original)
The shop owner spent $540 to purchase a stock of computer keyboards, so:
XY=540
⇒X=540/Y
If the price of each keyboard had been reduced by $2, he could have bought 3 more keyboards:
(X-2)(Y+3)=540
⇒3X-2Y=6
⇒3.540/Y – 2Y=6
⇒Y=27
⇒X=20
⇒ the price of one keyboard: $20
what is the right answer
Answers
=================================================
Explanation:
Angle B = 90 degrees, and the side opposite this is the hypotenuse AC = 10.
Angle C = 30, and the side opposite this smallest angle is AB. For now we'll call this x.
It turns out that for any 30-60-90 triangle, the hypotenuse is twice as long as the short leg. So if x is the short leg, then 2x is the hypotenuse.
Set 2x equal to the given hypotenuse 10 and solve for x
2x = 10
x = 10/2
x = 5
That makes AB = 5.
In other words, we cut the hypotenuse in half to get the length of the shorter leg.
Cho tập hợp S gồm 100 số tự nhiên từ 1 đến 100 .Chọn ngẫu nhiên 2 số từ tập hợp S , tính xác suất để tích 2 số chia hết cho 5
Answers
Answer:
mjhghjmkvgk,lm
Step-by-step explanation:
Can someone pls help
Answers
a) Use one of these symbols <, > or = to make each statement true.
(i) 18.4
| 18.04
(ii) 0.7
35
50
b) Round 173528 to the nearest hundred.
c) Write
as a decimal.
Answers
Answer:
(i) 18.4 > 18.04
(ii) 0.7 < 50 > 35
b) 173500
c) 173500
Step-by-s tep explanation:
(i) To compare decimals such as 18.4 and 18.04, first line up the decimal points of the numbers. Next, we compare the digits place by place starting on the left. 1 and 1 are the same, 8 and 8 are the same, but notice that 4 is greater than 0. This means that 18.4 is greater than 18.04.
(ii) Simple less than < greater than > skills.
b) Simple rounding.
c) The answers stays the same; rounding cannot be completed using JUST whole numbers.
Using the graph, determine the value of the slope.
v
CO 3
What is the slope?
4
2
What is true about the graph?
4
-2
-2
Intro
Done
Answers
Answer:
gradient of horizontal slope is 0
Find the circumference for the circle. use 3.14 for pi
A. 25.12 m.
B. 12.56 m.
C. 7.14 m.
D. 50.24 m.
Answers
Answer: 50.24
Step-by-step explanation:
=3.14x4 squared
=3.14x16
=50.24
PLEASE ANSWER DUE IN 30 MINUTES IM GONNA FAIL ITS GRADE 7 WORK EZ HAP
1.Why were rivers very important to Canada’s
development and history?
2. What rivers run near to where you live? How are they
important to you?
Answers
Answer:
Rivers helped Canada in so many ways! One of the ways was it helped Canada travel trading goods with the waterways. Also 7% of the worlds fresh water come from Canada Rivers. Im from Toronto and the rivers here are super important. They provide me, my friends and family and everyone around me fresh water. and there are some beautiful sceneries from them to!
Step-by-step explanation:
Hope this gave you some ideas and helped please mark brainliest :)
Answer:
Certain heritage rivers, such as the Kazan River in Nunavut, are designated for their natural heritage. These pristine waterways are valued for their undisturbed Fall Caribou Crossing, Parks Canada / Passage-de-Caribous-en-Automne, Parcs Canadabeauty and have been designated to ensure that their natural integrity is protected... https://www.historicplaces.ca/en/pages/17_heritage_rivers-rivieres_patrimoniales.aspx I got you!
Step-by-step explanation:
Find two integers whose sum is -11 and product is 18
Answers
Answer:
-9 and -2Step-by-step explanation:
As,
Sum = - 9 + (-2) = -11
Product = -9 × (-2) = 18
Write the exact value of the side length of a square with an area of
100 square units,
95 square units.
36 square units.
30 square units.
Answers
You basically look at the bar graph on the right and see which statement is true. Brainliest and thank you!
Answers
Answer:
D, if graphed, it would show a straight line.
Step-by-step explanation:
Because the graph has a relationship (disproving A,) and has 5 cards per pack, (disproving B and C,) we can already rule out the answer choice.
Because the value is constant, (x = y(5)) it will be straight, thus giving you your answer. You can even graph the values for a clear representation.
Consider the following sequence of numbers
Answers
Answer:
There are no questions below .
Which of the following sets of ordered pairs does not represent a function?
A {(1,2), (2, 3), (4, 5), (3, 3)}
B {(-1,3), (2, 3), (6,5), (7,3)}
C {(1, 2), (1, 3), (-4, 5), (3, 3)}
D {(-1, 2), (2, 2), (4, 2), (3, 2)}
Answers
Xd hope this helps
If Allison wants to find 80% of 630, which table should she use?
20%
20%
Percent
20%
20%
20%
Total
100%
25%
Percent
25% 25%
25%
Total
100%
40%
Percent
40%
40%
Total
100%
Percent
8% 8% 8% 8% 8% 8% 8% 8% 8% 8% 8% 8%
Total
100%
Answers
Answer:
A. the first one
Step-by-step explanation:
The first one
Eric kept a record of the number of hours it rained each day from Monday to Saturday in a particular week. This information was shown through the following Bar Graph.
How does the Bar Chart misrepresent the data?
A. The scale along the vertical axis is divided into unequal intervals.
B. The categories along the horizontal axis are missing Friday.
C. The widths of the bars are not equal.
D. The heights of the bars representing Monday and Thursday are not same.
Answers
Answer:
The answer is B because the title says each day but Friday is missing. Also, the graph is not set up properly as they should be closer together so it could possible be C but, I doubt it.
Answer:
B. well its just not there
Find the gradient of the line segment between the points (-5,2) and (4,3) give your answer in the simplest form
Answers
Answer: The gradient of the line segment between the points (-5,2) and (4,3) is [tex]\dfrac{1}{9}[/tex].
Step-by-step explanation:
Formula for gradient of a line segment :
[tex]\text{Gradient}=\dfrac{\text{Difference between y-coordinates}}{\text{Difference between x-coordinates}}[/tex]
Given points of the line segment: (-5,2) and (4,3)
[tex]\text{Gradient} =\dfrac{3-2}{4-(-5)}[/tex]
[tex]\text{Gradient} =\dfrac{1}{4+5)}[/tex]
[tex]\text{Gradient} =\dfrac{1}{9}[/tex]
Therefore , the gradient of the line segment between the points (-5,2) and (4,3) is [tex]\dfrac{1}{9}[/tex].
cho số phức z thỏa mãn 2iz-5+i=i-(z-2i) tính modun của số phức w=z-1+i
Answers
Solve the given equation for z :
2iz - 5 + i = i - (z - 2i )
2iz - 5 = 2i - z
(2i + 1) z = 2i + 5
z = (2i + 5)/(2i + 1)
z = (2i + 5)/(2i + 1) × (2i - 1)/(2i - 1)
z = (4i ² + 10i - 2i - 5) / (4i ² - 1)
z = (8i - 9)/(-5)
z = 9/5 - 8/5 i
Then
w = z - 1 + i = 4/5 - 3/5 i
Figure VWYX is a kite.
3
(18x-2)
V
Y
(12x+2)
х
Answers
Answer:
18X-2+12X+2=360-180
30X=180
X=6
The value of the variable x is 6, in the given rhombus.
What are the properties of the rhombus?A quadrilateral having the following characteristics is called a rhombus:
The lengths of the four sides are equal.Parallel sides are situated next to one another.Angles that are opposite each other are equal (i.e., they have the same measure).The diagonals form a right angle split across one another.Each diagonal is the same length.From the properties of a rhombus,
The sum of all angles is 360°.
Thus, in the given case,
18x-2+12x+2+ 90° +90° = 360°
18x- 2 + 12x +2 = 180°
30x = 180
x = 6
Therefore, the value of the x is 6.
Learn more about Rhombus here:
https://brainly.com/question/27870968
#SPJ5
Below are two parallel lines with a third line intersecting them.
Answers
Answer:
56
Step-by-step explanation:
they are same side interior angles so both add up to 180 so just subtract 124 from 180 to get 56
A particular strain of bacterium has 20 bacteria in generation 1 and triples in
population every generation. The explicit formula for the number of bacteria
in generation n is:
a(n) = 20-3(n-1)
How many bacteria are in generation 9?
A. 480
B. 131,220
C. 6561
D. 393,660
Answers
Which property is shown?
If m∠ABC = m∠CBD, then m∠CBD = m∠ABC
Answers
ANSWER: symmetric property
hope it helps thanks
brainliest pls
Answer: The answer is Symmetric Property
Which exponential equation is equivalent to this logarithmic equation?
log5 x - log5 25 = 7
A. 7^9=x
B. 5^9=x
C. 7^5=x
D. 5^5=x
Answers
Answer:
[tex] \displaystyle B)x = {5}^{9} [/tex]
Step-by-step explanation:
we are given a logarithmic equation
[tex] \displaystyle \log_{5}(x) - \log_{5}(25) = 7[/tex]
simplify the log:
[tex] \displaystyle \log_{5}(x) -2 = 7[/tex]
add 2 to both sides:
[tex] \displaystyle \log_{5}(x) = 9[/tex]
remember that,
[tex] \displaystyle \log_{a}(b) = c \iff {a}^{c} = b[/tex]
so we obtain:
[tex] \displaystyle x = {5}^{9} [/tex]
hence,
our answer is B)
−2y = 9x + 6
slope =
y-intercept =
Answers
Answer:
isnt the slope 4.5
Step-by-step explanation:
wewewewewewe
what is the correct answer
Answers
Answer: c
hope this works
Abigail invested $130 in an account paying an interest rate of 4 5 8 4 8 5 % compounded continuously. Hunter invested $130 in an account paying an interest rate of 4 7 8 4 8 7 % compounded daily. To the nearest hundredth of a year, how much longer would it take for Abigail's money to triple than for Hunter's money to triple?
Answers
Answer: 1.22 years
Step-by-step explanation: see photos attached.
Which property is represented by the equation shown below? (6 x 3) x 2 = (3 x 6) x 2.
Answers
Answer:
I'm pretty sure it's Distributive property
Step-by-step explanation:
I think this because on the outsides of the parenthesis you can distribute the 2 to the other numbers.
In this lesson you will learn methods for finding the lengths of which of the following?
chords
arcs
radii
tangents
secants
Answers
radii...................
Answer:
RADI
Step-by-step explanation: