All categories

3 years ago

The sum of eight times a number and fifteen is seven.Find the number. How do I work this out like these?

Mathematics

1 answer:

CaHeK987 [17]3 years ago

5 0

(8x n) + 15=7 : 7-15= (-8), (-8)divided by 8= (-1) : n=(-1) : When you have problems like this it helps to work them backwards. Hope you understand this.

You might be interested in

There is a 16 GB hard drive and 3.32 GB is taken up by photos what percentage is that please and thank you if you answered. Oh y

OLga [1]

Answer:

20.75

Brainliest answer pls

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

(11+34-3 to the power of 2)÷(6+6)in order of operation

Brrunno [24]

Answer:

Step-by-step explanation:

(11 + 34 - 3^2) / (6 + 6) =

(11 + 34 - 9) / 12 =

36/12 =

8 0

3 years ago

What is 8 3/4 ÷ 2 7/8 (show ur work)

xxMikexx [17]

Answer:

see below:-

Step-by-step explanation:

$\displaystyle{8 \frac{3}{4} \div 2 \frac{7}{8} }$

Convert the mixed fractions into improper fractions.

$\displaystyle{ \frac{8 \times 4 + 3}{4} \div \frac{8 \times 2 + 7}{8} }$

$\displaystyle{ \frac{32 + 3}{4} \div \frac{16 + 7}{8} }$

$\displaystyle{ \frac{35}{4} \div \frac{23}{8} }$

$\displaystyle{ \frac{35}{4} \times \frac{8}{23} }$

$\displaystyle{ \frac{35}{ \cancel4} \times \frac{ \cancel8 {}^{2} }{23} }$

$\displaystyle{ \frac{35 \times 2}{23} }$

$\displaystyle{ \frac{70}{23} }$

$\displaystyle{3 \frac{1}{23} }$

6 0

3 years ago

Read 2 more answers

Y=x2–2x+5. Write the equation in vertex form.

Crazy boy [7]

Answer:

y = (x - 1)² + 4

Step-by-step explanation:

Given equation:

y = x² - 2x + 5

Complete the square to convert the equation into vertex form:

y = x² - 2x + 1 + 4 =
(x - 1)² + 4

7 0

2 years ago

IQ scores for adults aged 20 to 34 years are normally distributed according to N (110,25). Use the empirical rule to answer the

xxTIMURxx [149]

Since the mean of the distribution is 110, and the distribution is normal, then 50% of the the people will have scores below 110.

6 0

3 years ago