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3 years ago

Select all the expressions that have a value of 40 when x = 10.8.

Mathematics

2 answers:

natta225 [31]3 years ago

5 0

Answer:

Step-by-step explanation:

B. =16x+288x

C. = 1 18 x2+33.52

1752

−

162

−162

x+1752

6(−27x+8468)

29x

−162x+50808

29x

F.=

x+36

slavikrds [6]3 years ago

4 0

Answer:

Step-by-step explanation:

We have that:

x=10.8

x +29.2=40

because

10.8+29.2=40

Another possible expression is

50.8 - x =40

This is so, because:

50.8 -10.8 =40

Another one is:

2x+18.4=40

This is so because:

2*10.8+18.4=40

So, all you need to do is to substitute 10.8 for x in the given expression,

If the solution equates to 40, then that's your answer

i might be wrong im sorry if i am

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T a linen sale Mrs. Earle bought twice as many pillowcases for $2 each as sheets for $5 each. If she spent less than $40, not in

Anettt [7]

For this case, the first thing we must do is define variables:
x: number of pillowcases
y: number of sheets
We now write the system of equations:
2x + 5y = 40
x = 2y
Solving the system we have:
x = 8.9
y = 4.4
Answer:
The maximum number of pillowcases she could have purchased is:
x = 8 (spent less than $ 40)

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3 years ago

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True [87]

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H(0)=5

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Domain =[0,oo)

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2 years ago

The mean speed of vehicles along a stretch of highway is 56 mph with a standard deviation of 4 mph. You

Elenna [48]

The corresponding z score for speed of 62 mph, 47 mph, and 56 mph is 1.5, -2.25 and 0 respectively.

<h3>Z score</h3>

Z score is used to determine by how many standard deviations the raw score is above or below the mean. It is given by:

$z=\frac{x-\mu}{\sigma }$

Where x is raw score, μ is mean, σ is standard deviation

Given that:

σ = 4, μ = 56, hence

for x = 62:

$z=\frac{62-56}{4 } =1.5$

for x = 47:

$z=\frac{47-56}{4 } =-2.25$

for x = 56:

$z=\frac{56-56}{4 } =0$

The corresponding z score for speed of 62 mph, 47 mph, and 56 mph is 1.5, -2.25 and 0 respectively.

Find out more on Z score at: brainly.com/question/25638875

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3 years ago

What is 79/100 as a decimal

dolphi86 [110]

Hey!

-------------------------------------

Solution:

Divide to get the decimal.

79 / 100 = 0.79

-------------------------------------

Answer:

0.79

-------------------------------------

Hope This Helped! Good Luck!

3 0

3 years ago

Read 2 more answers

Habib wants to cover a kitchen wall in ceramic tile. The wall is 42 feet by 10 feet.

Slav-nsk [51]

Answer: Side of largest square tile will be 105 feet.

Explanation:

Since we have given that

dimensions of the wall is 42 feet by 10 feet

So,

Length of wall = 42 feet

Breadth of wall = 10 feet

First we calculate the H.C.F. of 42 and 10,

which is 2 only.

The largest square tile side would be 2 feet.

Now, we find the number of tiles used,

Number of tiles =

$\frac{\text{Area of wall}}{\text{H.C.F. of }42\text{ and }11\times\text{ H.C.F. of }42\text{ and } 11}}\\\\=\frac{42\times 10}{2\times 2}\\\\=\frac{420}{4}\\\\=105$

We get integer value of number of tiles.

Therefore, Side of largest square tile will be 2 feet.

7 0

3 years ago