All categories

2 years ago

Please Help I Don't Understand!!!

Mathematics

2 answers:

Llana [10]2 years ago

7 0

Answer:

14.5

Step-by-step explanation:

$\frac{2}{7} = \frac{5}{m + 3}$

$2(m + 3) = 7 \times 5$

$2m + 6 = 35$

$2m = 35 - 6$

$2m = 29$

$m = 14.5$

Wittaler [7]2 years ago

7 0

Answer:

m = 14.5

Step-by-step explanation:

$\frac{2}{7}$ = $\frac{5}{m+3}$ ( cross- multiply )

2(m + 3) = 35

2m + 6 = 35 ( subtract 6 from both sides )

2m = 29 ( divide both sides by 2 )

m = 14.5

You might be interested in

Please help, GodBless.

MAXImum [283]

Answer:

m = - 6 :)

Step-by-step explanation:

3 0

3 years ago

A store sells toys in bulk. It sells wooden blocks for $5 a pound and plastic bricks for $10

steposvetlana [31]

Answer:

4 pounds of wooden blocks and 6 pounds of plastic bricks should be used.

Step-by-step explanation:

Let w = wooden block

Let p = plastic bricks

<u>Given the following data;</u>

Price of wooden block per pounds = $5

Price of plastic brick per pounds = $10

*Translating the word problem into an algebraic equation*

For the 10-pound mixture;

$w + p = 10$ .........equation 1

For the $80 mixture;

$5w + 10p = 80$ ..........equation 2

Solving the linear equation by using the substitution method;

Making w the subject in equation 1:

$w = 10 - p$ .......equation 3

Substituting "w" into equation 2;

$5(10 - p) + 10p = 80$

Simplifying the equation, we have;

$50 - 5p + 10p = 80$

$50 + 5p = 80$

Rearranging the equation, we have;

$5p = 80 - 50$

$5p = 30$

$p = \frac {30}{5}$

p = 6 pounds (For the plastic brick).

To find w;

Substituting "p" into equation 3;

$w = 10 - 6$

w = 4 pounds (For the wooden block).

4 0

3 years ago

Help me please I’m really struggling

shtirl [24]

Answer:

Step-by-step explanation:

6 0

3 years ago

Greg drove at a constant speed in a rainstorm for 300 miles. He took a break, and then stopped. He then drove 114 miles at a spe

swat32

Answer:

calculate it. its not cheating, its like flash cards but better ;)

Step-by-step explanation:

7 0

3 years ago

Three equivalent forms of a quadratic function are given. Select the form which reveals the zeros of f(x) without needing to alt

Vanyuwa [196]

Answer:

Read explanation and apply it

Step-by-step explanation:

The vertex form of a quadratic equation is $f(x)=a(x-h)^2+k$

The general form of a quadratic equation is $f(x)=ax^2+bx+c$

The factored form of a quadratic equation is $f(x)=a(x-p)(x-q)$

The one which reveals the zeros of f(x) without needing to alter the equation is the factored form $f(x)=a(x-p)(x-q)$ .

When f(x)=0, we have $a(x-p)(x-q)=0$

The values of x are $x=p$ and $x=q$ .

I hope this guides you to choose the correct answer.

4 0

3 years ago