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4 years ago

-4b - 5 + 2b =10. Can I have some help solving this.

Mathematics

2 answers:

kirill115 [55]4 years ago

7 0

Answer:

-7.5

Step-by-step explanation:

-4*- 7.5 =30

2*-7.5= -15

30-5-15=10

kramer4 years ago

5 0

Answer:

-7.5

Step-by-step explanation:

Simplify

-4b - 5 + 2b = 10

-2b - 5 = 10

-2b = 15

b = -7.5

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3 years ago

Consider the graph of the cosine function shown below.

nata0808 [166]

Answer:

a. Amplitude: 4

Period: 1

b. The maximum values occur at $\theta=0,1,2$

The minimum values occur at $\theta=\frac{1}{2},\frac{3}{2}$

The zeros occur at $\theta=\frac{1}{4},\frac{3}{4},\frac{5}{4},\frac{7}{4}$

Step-by-step explanation:

We can see from the graph that;

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This is where the graph intersected the x-axis.

7 0

3 years ago

Find x - y subtracted from 0 <br> A) -x+y<br> B) -y-x <br> C) x-y

sleet_krkn [62]

First we write the statement step by step to find the correct equation.
We have then:
x - y
subtracted from 0
(0) - (x-y)
Resolving:
(0) - (x-y) = - x + y
You should notice that different signs are subtracted and equal signs are added.
Answer:
A) -x + y

3 0

3 years ago

I’m confused on this one

Leno4ka [110]

sorry buddy have no idea

8 0

3 years ago

How much of a 14% solution of iodine should be added to 89 ounces of a 47% iodine solution to get a 29% solution

Andrews [41]

We have 89 ounces of 47% iodine.
We will add "x" ounces of 14% iodine to get a 29% iodine solution.
89 * .47 + .14x = .29 * (89 + x)
41.83 + .14x = 25.81 + .29x
16.02 = .15x
x = 106.80
So, we must add 106.80 ounces of 14% iodine to get a 29% iodine solution.
(for a total of 195.80 ounces)

Source:
http://www.1728.org/mixture.htm

3 0

3 years ago