All categories

3 years ago

When 7 is subtracted from a number four times, the result is 3. What is the number?

Mathematics

2 answers:

Murljashka [212]3 years ago

8 0

the answer is 31

Step-by-step explanation:

hfndjwldnj4

maksim [4K]3 years ago

6 0

Answer:

Step-by-step explanation:

To answer this problem, work backwards!

The question said that 7 is subtracted from a number 4 times. The opposite of this is to add 7 four times.

7 + 7 + 7 + 7 = 28

The problem also says that the result is 3. That means that after subtracting 7 four times, the remainder is 3. Let's add that remainder to our sum (or the answer to an addition problem.)

28 + 3 = 31

Therefore, the number is 31.

Check your work:

Let's subtract 7 from 31 four times.

31 - 7 = 24

24 - 7 = 17

17 - 7 = 10

10 - 7 = 3

After we subtracted 7 four times, the result was 3. That means our answer is correct!

You might be interested in

Replace m with a whole number. 7 (4+m)=49

Ann [662]

7*4=28
28+7m=49
49-28=21
7m=21
21/7=3
m=3

3 0

3 years ago

NEED THE ANSWER AND EXPLANATION PLEASE

Sindrei [870]

You would use the Pythagorean theorem and plug it in

5 0

4 years ago

Read 2 more answers

Which equations can be used to solve for acceleration? Check all that apply.

salantis [7]

$a =\frac{v_f - v_i}{t}\\\\at = v_f -v_i\\\\\boxed{\bf{v_f =at +v_i}}\\\\\boxed{\bf{v_i = v_f-at}}$

3 0

4 years ago

Read 2 more answers

6+ 9х2 + 32 - 410 - 95 - 5 ОА. 10 ОВ. 9 Ос. 4 OD. 6

Nookie1986 [14]

Answer:

D its really basic math you can also just do it in a calculator lel

8 0

3 years ago

Scores on a certain intelligence test for children between ages 13 and 15 years are approximately normally distributed with μ=10

Tju [1.3M]

Answer: 0.8238

Step-by-step explanation:

Given : Scores on a certain intelligence test for children between ages 13 and 15 years are approximately normally distributed with $\mu=106$ and $\sigma=15$ .

Let x denotes the scores on a certain intelligence test for children between ages 13 and 15 years.

Then, the proportion of children aged 13 to 15 years old have scores on this test above 92 will be :-

$P(x>92)=1-P(x\leq92)\\\\=1-P(\dfrac{x-\mu}{\sigma}\leq\dfrac{92-106}{15})\\\\=1-P(z\leq })\\\\=1-P(z\leq-0.93)=1-(1-P(z\leq0.93))\ \ [\because\ P(Z\leq -z)=1-P(Z\leq z)]\\\\=P(z\leq0.93)=0.8238\ \ [\text{By using z-value table.}]$

Hence, the proportion of children aged 13 to 15 years old have scores on this test above 92 = 0.8238

4 0

3 years ago

When 7 is subtracted from a number four times, the result is 3. What is the number?​

When 7 is subtracted from a number four times, the result is 3. What is the number?