Answer:
-10
Step-by-step explanation:
-3/4(x+2)=6
x+2=6/(-3/4)
x+2=(6/1)(-4/3)
x+2=-24/3
x+2=-8
x=-8-2
x=-10
Can someone help me please?
The sum of two numbers is 24. The second number minus the first number equals 2.
Let x represent the first number. Let y represent the second number.
Write a system of equations to represent the situation.
First sentence: First Equation:
Second Sentence: Second Equation:
*Do not include spaces in your equations.
Part 2: Find the numbers. ( , )
Answer:
(11, 13)
Step-by-step explanation:
First Equation: x+y=24
Second Equation: y=x+2
x + (x + 2) = 24
2x + 2 - 2 = 24 - 2
2x/2 = 22/2
x = 11
y = (11) + 2
y = 13
Therefore, the solution to the system is (11, 13)
The growing seasons for a random sample of 34 US cities were recorded, yielding a sample mean of 188.1 days And the population standard deviation of 53.1 days. Estimate the true population mean of the growing season with 95% confidence
Answer:
(170.251 ; 205.949)
Step-by-step explanation:
Sample size, n = 34
Sample mean, xbar = 188.1
Population standard deviation, σ = 53.1
Confidence level = 95% ; Zcritical at 95% = 1.96
Using the confidence interval relation :
Xbar ± standard Error
Standard Error = Zcritical * σ/√n
Standard Error = 1.96 * 53.1/√34
Standard Error = 17.849
Lower boundary = (188.1 - 17.849) = 170.251
Upper boundary = (188.1 + 17.849) = 205.949
(170.251 ; 205.949)
To make a jug of plant fertilizer, Malaika uses 6 cups of water and 3 scoops of fertilizer. Bart uses 8 cups of water and 5 scoops of fertilizer. Will Malaika's and Bart's plant fertilizer have the same strength? Explain.
Answer:
No they will no have the same strength. So what I did was find a common number between them so between 8 and 6 they both can be multiplied to 24. So 6 goes into 24 4 times so I multiplied 3 times 6 and then 8 goes into 24 3 times so I multiplied 3 and 5 and so the final answer is that bart has more strong fertilizer
Step-by-step explanation:
6*4=24 4*3=12
8*3=24 5*3=15
A boat traveled 54 km with the stream and 42 km against the stream spending a total of as much time as it would spend while travelling 96 km in a lake. Find the speed of boat while it is travelling in the lake, if the current of the river is 3 km/hour.
Hii! If someone can like show how they got this I would really appreciate it! Thank you so much. I kinda need it quick
Answer:
24 km/hStep-by-step explanation:
The speed of the boat in the lake = xThe speed of the current = 3 km/hRequired equation:
54 / (x + 3) + 42 / (x - 3) = 96/x9x(x - 3) + 7x(x + 3) = 16(x + 3)(x - 3)9x² - 27x + 7x² + 21x = 16x² - 1446x = 144x = 144/6x = 24 km/h Mrs. Rogers' sister is two years older than Mrs. Rogers. Their combined ages add up to 88. How old is
Mrs. Rogers?
Each year, roughly 10^6 computer programmers each make about $ 10^5.
How much money is this all together? Express your answer both as a power
of 10 and as a dollar amount.
Answer:
100,000,000,000
Step-by-step explanation:
1 000 000 times 100 000 = 100,000,000,000
Find the missing angle measures. Just type the number
Answer:
1. 142
2. 38
3. 142
5. 142
6. 38
7. 142
8. 38
Step-by-step explanation:
Angles across from another angle in an x have the same value
A line has an angle of 180º so the angle on the other side of a split line is whatever angle would make it add up to 180
180º - 38º = 142º
Pls help me
NO LINKS OR I WILL REPORT
Thank you!
Answer:
a = 2.3
Step-by-step explanation:
[tex]2a = 4.6 \\ \frac{2a}{2} = \frac{4.6}{2} \\ a = 2.3[/tex]
I’m stuck on this please
Answer:
weak negative
Step-by-step explanation:
because its in negative and its in the thousands place.
Two sides of a parallelogram are 200 feet and 580 feet. The measure of the angle between these sides is 112°. Find the area of the parallelogram to the nearest square foot.
Answer:
Area of the parallelogram = 107,555 square feet
Step-by-step explanation:
Let
h = height of the parallelogram
sin (112°) = h/200 feet
h = sin(112°) × 200
h = 0.927184 × 200
= 185.4368 feet
h = 185.44 feet
Area of the parallelogram = base × height
= 580 feet × 185.44 feet
= 107,555.2 square feet
To the nearest square root = 107,555 square feet
Area of the parallelogram = 107,555 square feet
The equation below has two answers. One of the answers is X=5. What is the other value of X?
Answer:
x = - 5
Step-by-step explanation:
The absolute value function always gives a positive result , then
| - 5 | = | 5 | = 5
Thus x = 5, x = - 5
daniella made a table and a graph for the equation y=3x did daniella make these items correct select true statement
Answer:
B
Step-by-step explanation:
if you can see in the graph, the graph axes calculation is not the same with the one given.
Is answer of this right or wrong.Pls help me
Answer:
pretty sure thats right!
Step-by-step explanation:
we just tested on this
I need help with the question attached above in the picture
A triangle has sides with lengths of 6 miles, 11 miles, and 15 miles. Is it a right triangle?
Answer:
No
Step by step explanation:
a² + b² = c²
6² + 11² = 15²
36 + 121 = 225
157 =/= 225
Answer:
No
Step-by-step explanation:
15 would be the longest angle or, the angle directly across the right angle
To see if this is a right angle, you'd have to do 11²+6², if it was a right angle, the answer would be 15² which it isn't so, it's not a right angle
arrange the following elements according to the increasing atomic size
Ai, P, Si, Mg
Which of the following cannot be solved using nPr?
permutations of the letters of the word "OF"
permutations of the letters of the word "PERMUTATION"
permutations of the letters of the word "THINGS"
permutations of the letters of the word "N"
Answer:
permutations of the letters of the word "PERMUTATION"
Step-by-step explanation:
The number of permutations of the letters of the word "PERMUTATION" cannot be solved using nPr. The correct answer is B.
What is the permutation?The permutation is defined as considered an ordered combination.
The following formula computes the permutation of r items from n:
P(n, r) = n! /(n-r)!
here order matters and repetition is not allowed.
Therefore, nPr cannot be used to solve problems that involve repeating items or where order does not matter.
As per the question, the permutations of the letters of the word "OF", "THINGS", and "N" involve distinct letters and no repetition, so they can be solved using nPr.
However, the word "PERMUTATION" has repeated letters.
Therefore, the number of permutations of the letters of the word "PERMUTATION" cannot be solved using nPr because it does not account for repeated items.
Learn more about the permutations here:
https://brainly.com/question/1216161
#SPJ2
Find the Area of the Trapezoid.
Answer:
18 ft^2
Step-by-step explanation:
Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
-4 x 3/2
Step-by-step explanation:
It will end up being -6 which is less than -4.
Tell me if it is wrong.
Have a nice day!
Answer:
We can use the numbers -4 and [tex]\frac{3}{2}[/tex] to get a product less than -4.
-4 x [tex]\frac{3}{2}[/tex] = -6
So, the answer is less than -4.
Please give Brainliest!
Have a great day!
Solve for x
x=?
please help real quick!!!
Answer:
x = 33 degrees
Step-by-step explanation:
To get the value of x, we use the appropriate trigonometric ratio
The side that faces the right angle is the hypotenuse and we have this measure as 25
The side that measures 21 is adjacent to the angle x
So we have to use the trigonometric ratio that connects the hypotenuse and the adjacent
The trigonometric ratio that does this is the cosine
so;
cosine is the ratio of the adjacent to the hypotenuse
So therefore;
cos x = 21/25
x = arc•cos (21/25)
x = 33 degrees
A right rectangular prism is 10 inches long, 6 inches wide, 10 inches tall. What are the area and the perimeter of a cross-section that is parallel to the base of the prism?
the area of a cross section parallel to the base is the base
the base is 4inches by 3 inches
area is 12 square inches
perimeter is 2(L+W)=2(4+3)=2(7)=14 inches
area is 12 square inches
perimeter is 14 inches
help and I'll give someone brainliest
simplify (a^-2b^2/a^2b^-1)^-3
Answer:
[tex]\frac{a12}{b3}[/tex]
Step-by-step explanation:
Hope this is right and helps you!
Answer:
a^12/b^9
Step-by-step explanation:
You need to multiply the exponent -3 to every other exponent
So then you would end up with a^6b^-6/a^-6b^3
Now you need to flip the negative exponents to the other side which would be a^12/b^9
What is the area of a parallelogram that has a height of 2 1/2 inches and a base of 7 inches
I need help ASAP
Find the surface ara of the square pyramid. Enter your answer in the box
Answer:
341 cm²
Step-by-step explanation:
The base is 11 x 11 = 121
Then there is 4 side that are triangles, 11 x 10 ÷ 2 = 55 -----> 55 x 4 = 220
220 + 121 = 341
Given the following data set 2,3,1,6,1,1,1,0,2,4,5,1,2,2,3
Mean
Median
Range
Mid range
Answer:
mean: 34/15=2.27
median: 2
range: highest-lowest...... 6-0=6
mid range: high + low divided by 2
6+0=6/2=3
Answer:
Mean: 2.27
Median: 2
Range: 6
Mid-range: 3
Step-by-step explanation:
The mean is adding the average of the data set; add up all numbers, then divide by how many numbers there are.
2 +3 + 1 + 6 + 1 + 1 + 1 + 0 + 2 + 4 + 5 + 1 + 2 + 2 + 3 = 34
There are 15 numbers in this data set.
34 ÷ 15 = 2.26666666667 ≈ 2.27 (nearest hundredth)
2.27 is the mean.
-------------------------------------------------------------------------------------------------------------The median is the middle number after putting the data set in numerical order.
0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 4, 5, 6
The median is 2.
--------------------------------------------------------------------------------------------------------------
0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 4, 5, 6
The range is the smallest number subtracted from the largest number.
6 - 0 = 6
6 is the range.
--------------------------------------------------------------------------------------------------------------
0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 4, 5, 6
The formula for mid-range is:
Maximum value + largest value ÷ 2.
The largest value is 6.
The minimum value is 0.
6 + 0 = 6
6 ÷ 2 = 3.
The mid-range is 3.
E line plot below shows the amount of water Rickayla drinks in 10 days. Part a: how many cups of water did Rickayla drink in 10 days?
Answer:
[tex]Total = 23\frac{1}{4}[/tex] cups
Step-by-step explanation:
Incomplete question.
See attachment for line plot
Required
Total cups drank in 10 days
The number of x at the top of each dataset represent the frequency (i.e. number of cups) drank on that day.
To get the total, we simply multiply this frequency by the accompanying dataset.
So, we have:
[tex]Total = 2 * 1\frac{1}{2} + 1 * 1\frac{3}{4} + 2 * 2 + 2 * 2\frac{3}{4} + 3 * 3[/tex]
Express fractions as improper fraction
[tex]Total = 2 * \frac{3}{2} + 1 * \frac{7}{4} + 2 * 2 + 2 * \frac{11}{4} + 3 * 3[/tex]
Evaluate each product
[tex]Total = 3 + \frac{7}{4} + 4 + \frac{11}{2} + 9[/tex]
Take LCM
[tex]Total = \frac{12+ 7+16+22+36}{4}[/tex]
[tex]Total = \frac{93}{4}[/tex]
[tex]Total = 23\frac{1}{4}[/tex]
Just a few more, help??????????
Answer:
53
Step-by-step explanation:
complementary angle meaning it needs to have the whole sum of 90 degree.
90-37=53
If the inflation rate is 4%, how much will a house now worth $187,000 be worth in 23 years?
Answer:
$172040
Step-by-step explanation:
187,000 (0.04) = $7480
23(7480) = $172040.
-----------------OR-----------------
187,000 x 0.04 x 23 = $172040
A sample of bacteria is growing at an hourly rate of 6% according to the continuous exponential growth function. The sample began with 5 bacteria. How many bacteria will be in the sample after 22 hours.
Answer:
18 bacteria
Step-by-step explanation:
The formula for Exponential growth is given as:
y = a (1 + r)^t
a = Initial sample size = 5
y = Sample size after time t
r = Growth rate = 6% = 0.06
t = Time in hours = 22
Hence,
y = 5 (1 + 0.06)²²
y = 5 × 3.6035374165783565
y =18.017687083 bacteria
Approximately = 18 bacteria
Therefore, there would be 18 bacteria in the sample after 22 hours