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3 years ago

What is the value of 7 (4+x) when x =5

2 answers:

5 0

This is a simple substitution task. Simply replace x with 5, thus the expression becomes:

7 (4+5).

Using the rules of calculation means solving the expessions in the brackets first thus you are left with 7(9) = 7*9

pashok25 [27]3 years ago

4 0

63
5+4=9
9*7=63
Hope this helps

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Brandi solved 16 / 5 by using a related multiplication expression. What multiplication expression did she is?

klemol [59]

The given question is wrong.

Question:

Brandi solved $\frac{1}{6}\div 5$ by using a related multiplication expression. What multiplication expression did she is?

Answer:

The related multiplication expression is $$\frac{1}{6}\times \frac{1}{5}$ .

Solution:

Given expression is $\frac{1}{6}\div 5$ .

We can write 5 as a fraction with denominator 1.

$$ \frac{1}{6}\div5=\frac{1}{6}\div \frac{5}{1}$

Using the fraction rule $$\frac{a}{b}\div \frac{c}{d}=\frac{a}{b}\times \frac{d}{c}$ ,

$$\frac{1}{6}\div \frac{5}{1}=\frac{1}{6}\times \frac{1}{5}$

Now multiply the fractions using the rule $$\frac{a}{b}\times \frac{d}{c}=\frac{a\times d}{b\times c}$ ,

$$\frac{1}{6}\times \frac{1}{5}=\frac{1\times1}{6\times5}$

Let us multiply the numbers in the numerator and denominator separately, we get

$$\frac{1\times1}{6\times5}=\frac{1}{30}$

Hence the related multiplication expression is $$\frac{1}{6}\times \frac{1}{5}$ .

8 0

3 years ago

WHOEVER GETS THIS RIGHT IN 3 MINUTES GETS THE BRAINLIEST!! Four times the sum of a number and 15 is at least 120. Let x represen

larisa [96]

Hey there!

Let's call this "number" x. We want four times the sum of this number and 15 to equal at least 120.

Therefore, we want this number times four plus fifteen to be greater than or equal to 120. We have:

$4(x+15)\geq 120$

Distribute:

$4x + 60 \geq 120$

Subtract:

$4x\geq 60$

Divide:

$x\geq 15$

Your answer is C.

Hope this helps!

7 0

3 years ago

Is the ratios 2.5,3.5 and 5.7 porportional

11111nata11111 [884]

No because 2/3 to 3/5 and 3/5 to 5/7 arent proportional.

7 0

4 years ago

Can anyone help me in pre-cal <br>tan^2 x = tan x<br>sin^2 x = sin x

vagabundo [1.1K]

They will equal each other at the angles when they are equal to 1. This is because 1^2=1. Tan is 1 at pi/4 and 5pi/4. Sin is 1 at pi/2

3 0

3 years ago

Gavin is saving up to buy a new phone. He already has $100 and can save an additional $7 per week using money from his after sch

vodka [1.7K]

Answer:

170$

Step-by-step explanation:

100+7W

4 0

3 years ago