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Gelneren [198K]
3 years ago
12

Wrote and solve an equation to find the number.The difference of twice a number and 7 is 9​

Mathematics
1 answer:
andrew11 [14]3 years ago
6 0

n - 7 = 9

Step-by-step explanation:

so basically just make up a random variable and place it for the "twice a number" then u sovle it as a 2 step equation

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Max makes bread that calls for 7/8 cup of raisins per loaf. He has 5 1/4 cups of raisins. How many loaves of bread can he make?
Sveta_85 [38]

Answer:

False.

Step-by-step explanation:

The answer is NOT 6 1/2 loaves it is 6 loaves.

Knowing that there Max has 5 1/4 cups of raisins and each loaf requires 7/8 cup of raisins, we would need to divide.

Let's turn the 5 1/4 into an improper fraction so when we divide the two fractions, it would be easier!

<u>To turn 5 1/4 into an improper fraction we need to...</u>

5 x 4 = 20

20 + 1

21/4

Now we divided 21/4 by 7/8.

When dividing fractions remember the rule: KEEP CHANGE FLIP!

We keep the first fraction...which is 21/4 in this case

Change the sign from division to multiplication

21/4 x 7/8

And flip 7/8 so it becomes 8/7

21/4 x 8/7

= 168/28

  = 6 loaves

So, the answer is not 6 1/2 loaves (false!)

7 0
3 years ago
Read 2 more answers
What is the standard deviation of a normal distribution, whose mean is 35, in which an x-value of 23 has a z-score of -1.63?
Dvinal [7]

Answer:

7.36

Step-by-step explanation:

z-score is:

z = (x − μ) / σ

Given that z = -1.63, x = 23, and μ = 35:

-1.63 = (23 − 35) / σ

σ ≈ 7.36

6 0
3 years ago
Help me pls plsssssssssssss​
garri49 [273]

Answer:

Step-by-step explanation:

6 0
3 years ago
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What is the volume of a cylinder with a radius of 30 cm and a height of 15 cm PLEASE IM BEGGING PLEASE HELP
MAVERICK [17]

Answer:

We need to find the area of the base/circle then multiply it by the height so if you know the formula area of a circle your good to go.

30^2 = 900

900 x 3.14 =2,826

Now lets multiply the base's area/circle by the height!

2,826 x 15 = 42,390 cm^3(cm cubed) is your answer.

3 0
3 years ago
Tyler’s brother earns $15 per hour. The store offers him a raise—a 5% increase per hour. After the raise, how much will Tyler’s
postnew [5]

Answer:

$75per hour

<h2 />

Step-by-step explanation:

15×5=75 jshshhsbw

4 0
3 years ago
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