Answers
b)y=18
Hope this helps :)))
Related Questions
Select all equations that have two solutions. a x^2=16 b 4x^2=0 c x^2=-16 d 3x+2=14 e x^2-1=24 f (x+8)(x-8)=0
Answers
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a )
[tex] {x}^{2} = 16[/tex]
[tex]x = ± \: 4[/tex]
Two solutions.
_________________________________
b )
[tex]4 {x}^{2} = 0[/tex]
[tex]x = 0[/tex]
One solution .
_________________________________
c )
[tex] {x}^{2} = - 16[/tex]
[tex]No \: \: solution.[/tex]
_________________________________
d )
[tex]3x + 2 = 14[/tex]
[tex]x = 4[/tex]
One solution.
_________________________________
e )
[tex] {x}^{2} - 1 = 24[/tex]
[tex] {x}^{2} = 25[/tex]
[tex]x =± \: 5[/tex]
Two solutions.
_________________________________
f )
[tex](x + 8)(x - 8) = 0[/tex]
[tex]x = - 8 \: \: or \: \: x = 8[/tex]
Two solutions .
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Except from the option(c), all equations have 2 solutions.
What is an equation?"An equation is a formula that expresses the equality of two expressions, by connecting them with the equal sign"
Given equations are:
a. x² = 16
This is a quadratic equation. This equation has two solutions.
b. 4x² = 0
This is a quadratic equation. This equation has two solutions.
c. x² = - 16
This equation doesn't have any solution.
d. 3x + 2 = 14
This is a quadratic equation. This equation has two solutions.
e. x² - 1 = 24
This is a quadratic equation. This equation has two solutions.
f. (x + 8)(x - 8) = 0
This is a quadratic equation. This equation has two solutions.
Learn more about equations here: https://brainly.com/question/14584746
#SPJ2
5% of students brought their lunch. 42 students brought their lunch. How many students in total are in Ridgewood Junior High School?
Answers
Answer:
840
Step-by-step explanation:
5%X20=100%
42X20=840
What is the mean?
3 0 4 7 0 4 5 3 6 8
Answers
Step-by-step explanation:
3+0+4+7+0+4+5+3+6+8/10
40/10
4
Answer:
The mean is 4.
Step-by-step explanation:
When you add 3+0+4+7+0+4+5+3+6+8 you get 40 and because there are 10 numbers you would divide 40 by 10 and get 4.
Mean-the average of all of the numbers in a data set...to find the mean you simply add all of the given numbers together and then divide that sum by the total amount of numbers given, then you will get your mean.
HOPE THIS HELPS!!!!!!!
A single die is rolled twice. Find the probability of rolling an odd
number the first time and a number greater than 4 the second time.
Answers
Step-by-step explanation and answer:
The 6 sides of the die are numbered 1,2,3,4,5,6
There are 3 odd and 3 even numbers
probability of an odd number on 1st roll is:
3/6=1/2
When you want A AND B probabilities, you multiply
the events A and B
The number less than 3 are 1,2, so the probability is:
2/6=1/3
so the probability of both events are going to be:
(1/2) *(1/3)=1/6
PLEASE HELP!!
Cindi has $400 in her bank account. Each week she withdraws $15 for spending money. After how many weeks will her bank balance drop below $300?
Answers
Answer:
equation 400-15x. 7 weeks
Step-by-step explanation:
400-15x
Algebra 1 TestNav answers
Answers
So there for i can help
What is the y-intercept of the line?
Answers
Answer:
(0 ; 1)
Step-by-step explanation:
Have a great day
Answer:
The y-intercept of this line is 1.
Step-by-step explanation:
You can tell by looking at the y-axis (vertical line.)
if the sum interior anhles of a regregrar polygon is equl to 720
find the number of side
Answers
Answer:
The sum of interior angles of a regular polygon is 720 degree 720 720 Degree find the measure of each interior angle of the polygon
Since each angle is equal, 720 is split into 6 equal parts. So, 720/6 = 120 degrees is the measure of each interior angle.
Step-by-step explanation:
how many times did the decimal point move if 1.56 went to 1560
Answers
Answer:
For 1.56 to get to 1560 the decimal point moved three times.
Step-by-step explanation:
To explain this I will give a visual representation.
We have to get from 1.56 to 1,560 and find out how many times it moved forwards.
0). 1.560
1). 15.60
2). 156.0
3). 1,560
as you can see it moved three times.
please answer this question.i would really apreciate it
Answers
In a catalog a dress was on sale for $49.56 this week. It regularly sells for $66.66. If the sales tax is 6% and shipping is below, what is the total amount you will save by ordering at the sale price?
Answers
Answer:
$18.13
Step-by-step explanation:
It is correct
ABC = DEF. Find the measure of the given angles.
A=×+19
D=2x
x =
Answers
I need help someone pls help me I been on this for to long
Answers
Step-by-step explanation:
the explanation is above
Take key note of the dots bcz some are coloured and some aren't
Please help me look at the photo
Answers
Answer:
I think the answers are E = 4 ¼ F = -6 ¼ D = -3 ¼
1/8 divided by ? = 1/40
fill in the question mark
Answers
Answer:
5
Step-by-step explanation:
1/8 divided by 5 equals 1/40
Answer:
[tex]\frac{\frac{1}{8}}{5}=\frac{1}{40}[/tex]
Step-by-step explanation:
Let 'x' be the number to which 1/8 had to be divided to get 1/40
so the equation becomes
[tex]\frac{1}{8}\div \:x=\frac{1}{40}[/tex]
[tex]\frac{\frac{1}{8}}{x}=\frac{1}{40}[/tex]
[tex]\frac{1}{8x}=\frac{1}{40}[/tex]
[tex]\mathrm{Apply\:fraction\:cross\:multiply:\:if\:}\frac{a}{b}=\frac{c}{d}\mathrm{\:then\:}a\cdot \:d=b\cdot \:c[/tex]
[tex]1\cdot \:40=8x\cdot \:1[/tex]
[tex]40=8x[/tex]
switch sides
[tex]8x=40[/tex]
Divide both sides by 8
[tex]\frac{8x}{8}=\frac{40}{8}[/tex]
[tex]x=5[/tex]
x=5 is the number.
Therefore,
1/8 divided by 5 = 1/40
i.e.
[tex]\frac{\frac{1}{8}}{5}=\frac{1}{40}[/tex]
SOLUTION CHECK
[tex]\frac{\frac{1}{8}}{5}[/tex]
[tex]\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{\frac{a}{b}}{c}=\frac{a}{b\cdot \:c}[/tex]
[tex]=\frac{1}{8\cdot \:5}[/tex] ∵ [tex]\frac{\frac{1}{8}}{5}=\frac{1}{8\cdot \:5}[/tex]
[tex]=\frac{1}{40}[/tex]
Write the equation y = 4x - 20 in Standard Form (AX + By = C) with integer coefficients
HELPPPP ASAPPP
Answers
Answer:
-4x + y = -20
Step-by-step explanation:
John had a rock that weighed 128 kg. The scale he used to weigh the rock has a percent error of 2%. Which could be measured weights of the rock?
Answers
Answer:
a
Step-by-step explanation:
Zoe bought 11 chicken wings for $20.90. What's the unit cost of one wing?
Answers
Answer:
$1.90
Step-by-step explanation:
$1.90
Explanation:
$20.90 for 11
For 1= $20.90/11=$1.90
I hope this helped :)
How do you answer this?
Answers
Answer:
x= -3/2Step-by-step explanation:
((4)²)^x = 1/(4)³
4²^x = 4³
thus the powers are same then
2x =-3
x=-3/2Answer:
x = - [tex]\frac{3}{2}[/tex]
Step-by-step explanation:
Using the rules of exponents
[tex](a^m)^{n}[/tex] = [tex]a^{mn}[/tex]
[tex]a^{-m}[/tex] ⇔ [tex]\frac{1}{a^m}[/tex]
Note that 16 = 4² and 64 = 4³ , then
[tex]16^{x}[/tex] = [tex]\frac{1}{64}[/tex] , can be expressed as
[tex](4^2)^{x}[/tex] = [tex]\frac{1}{4^3}[/tex] , that is
[tex]4^{2x}[/tex] = [tex]4^{-3}[/tex]
Since the bases on both sides are equal, then equate the exponents
2x = - 3 ( divide both sides by 2 )
x = - [tex]\frac{3}{2}[/tex]
Every Wednesday, Wayne works out for
3
4
of an hour at the fitness center. Every Saturday, he goes to the fitness center again and exercises for 3 times as long. How much time does Wayne spend at the fitness center in all each week?
Answers
I would say three hours?
−2x+5y=−17 3x-10y=283x−10y=28
Answers
Answer:
x = 6
y = -1
Step-by-step explanation:
-2x + 5y = -17 ------ equation 1
3x- 10y = 28 ------- equation 2
equation 1× 2
-4x + 10y = -34 ------- equation 3
equation 2 + equation 3
-x = -6
x = 6
x = 6 substitute for equation 1
-12 + 5y = -17
5y = -5
y = -1
Charly has a square carpet with the dimensions 10 by 97 inches what is the area?
Answers
Answer:
A = 970 inches²
Step-by-step explanation:
If Charly has a 'square' carpet of 10 by 97, then its not square but rectangular, with that in mind;
A = L x W
A = 10 x 97
A = 970 inches²
Hope this helps :)
Answer:
970 inches
Step-by-step explanation:
10x97=970
Length x Width = Area
x to the third power = 1 over 8
Answers
Answer:
1/2
Step-by-step explanation:
x^3=1/8.
We know 2^3(2*2*2)=8. So 1/2*1/2*1/2=1/8.
What is the image of (-4,9) after a dialation by a scale factor of 3 centered at the origin
Answers
Answer:
-12,27
Step-by-step explanation:
I WILL GIVE BRAINLIEST FOR CORRECT ANSWER!!
Answers
Answer:
2 1/2 divided by 5/2 is 1.
6 3/4 divided by 2 1/4 is 3
3 divided by 2/3 is 9/2.
1/3 divided by 3 is 1/9.
Step-by-step explanation:
hope I helped
Answer:
i don't have an answer but im here so the guy above me can get brainliset
Step-by-step explanation:
Which statement correctly compares the function shown on this graph with the function y = -x+ 4?
A. The function shown on the graph has the same rate of change, but a lower starting point.
B. The function shown on the graph has a smaller rate of change, but the same starting point.
C. The function shown on the graph has a greater rate of change, but the same starting point.
D. The function shown on the graph has the same rate of change, but a higher starting point
Answers
Answer:
I think the answer for this question is C
Answer:
the answer is c
Step-by-step explanation:
the distributive property of 27+60 ??
Answers
Answer:
Step-by-step explanation:
27+60= 87
Help Plzzz!
Convert 122lbs to Kilograms and plz show how you got the answer!!!!!!
Answers
Answer:
55.83
Step-by-step explanation:
Divide the number of pounds by 2.2046 to use the standard equation.
Answer:
55.34 kg
Step-by-step explanation:
1 kg = 2.204 lbs
then
[tex]122 lbs\times \frac{1 \: kg}{2.204 \: lbs} [/tex]
because lbs from the numerator will goes with lbs in the denominator the only unit remains is kg
so
122 ÷ 2.204 kg = 55.34 kg
3 kg of carrots cost 1.35 5kg of carrots and 2kg of potatoes cost a total of 4.15 find the cost of 1 kg of potatoes
Answers
Answer:
2.075 (scale to whatever your teacher wants)
Step-by-step explanation:
ratio of potatoes vs potato cost is 2:4.15
divide everything by two to find the cost of 1 potato
4.15/2=2.075
if you are dealing with money then your answer should either be 2.07 or 2.08
What is the value of x2 + (2y) ÷ (2w) + 3z for w = 2, x = 5, y = 8, and z = 3?
Answers
5² + 2(8) ÷ 2(2) + 3(3)
To simplify this further, we have to apply the rule of BODMAS
(Applying the rule of BODMAS simply means when you have an equation, if its having bracket, you have to remove the bracket first, then you move to powers then you proceed to dividing then subtraction and then addition)
5² + 2(8) ÷ 2(2) + 3(3)
=25 +16 ÷ 4 +9
=25 + 4 +9
=38
Therefore the value of x² + (2y) ÷(2w) +3z is 38