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4 years ago

Please help with 14 and 15

Mathematics

1 answer:

olchik [2.2K]4 years ago

6 0

n - a number

14. Nine more than the square of a number: n² + 9.

15. Twice the difference between a number and ten: 2(n - 10)

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I need help plzz x + 3/5 = 2/10

Stels [109]

Step-by-step explanation:

x=2/10 - 3/5

Divide

x + 1/5=3/5

Subtract 1/5 from both sides of the equation

x + 1/5 - 1/5= 3/5 - 1/5

x=2/5

7 0

3 years ago

Select the equation in which you use the inverse property of multiplication to find the solution.

loris [4]

Given:

Equations using properties.

To find:

The equation which use the inverse property of multiplication.

Solution:

Inverse property of multiplication:

The product of any number and its reciprocal is always 1.

Let us select the option which uses inverse property of multiplication.

Option A: $\left(\frac{3}{4} \cdot \frac{4}{3}\right)+7=8$

Inverse of $\frac{3}{4}$ is $\frac{4}{3}$ . Their product is 1.

$$\frac{3}{4} \cdot \frac{4}{3}=1$

This equation uses the inverse property of multiplication.

Option B: $\left(-\frac{7}{8}+\frac{7}{8}\right)+4=4$

Inverse of $\frac{-7}{8}$ is $\frac{8}{-7}$

So, it is not true equation.

Option C: $(-5 \cdot 0)-9=-9$

Inverse of $-5$ is $-\frac{1}{5}$ .

So, it is not true equation.

Option D: $\left[7 \cdot\left(\frac{5}{7}-\frac{4}{7}\right)\right]+8=9$

Here also inverse property is not used.

So, it is not true equation.

Hence the equation use the inverse property of multiplication is

$$\left(\frac{3}{4} \cdot \frac{4}{3}\right)+7=8$ .

7 0

3 years ago

Work out the value of x please

lina2011 [118]

Answer:

X=67.5

Step-by-step explanation:

360-90=270

Then I do

270/4=67.5 to find the answer of each X

(4 is how many X is in the 270 degree)

4 0

4 years ago

I dont know how to solve this one

Olenka [21]

Answer:

The answer is the second option or B, you have to divide the top number by the bottom number to get a unit rate.

5 0

3 years ago

Read 2 more answers

Evaluate the expression shown below and write your answer as a mixed number in simplest form.

Dahasolnce [82]

The answer would be -8 1/6.

3 0

3 years ago