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3 years ago

Help on 10,14 and 15 plzz

Mathematics

1 answer:

Allushta [10]3 years ago

4 0

10. 4(3d - 2) = 8d - 5
12d - 8 = 8d - 5
12d - 8d = 8 - 5
4d = 3
d = $\frac{3}{4}$

14. I need the picture of the square and triangle.

15. V = $\frac{1}{3}$ Bh
3V = Bh
$\frac{3V}{h}$ = B

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How do I solve these equations

Sever21 [200]

You need to know the properties of each function.
Tan is opposite (y) over adjacent (x). Sin>0 means that sin is positive, therefore, it is located on either quadrant 1 or 2. Tan=4/3 so it is located in quadrant 1.
The side of the triangle must be Adjacent=3 opposite=4 and hypotenuse=5
Now, you are asked to find the half angle of Cos which is
$\sqrt{\frac{1+cos}{2} }$
By following the formula, cos=3/5 then:
$\sqrt{ \frac{1- \frac{3}{5} }{2} }$ Multiply everything (inside the square $\sqrt{ \frac{5+3}{10} }$ root) by 5
$\frac{2 \sqrt{2} }{ \sqrt{10} }$
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3 years ago

A geologist visits 40 volcanoes in Alaska and California. 15% of the volcanoes are in California.

kotegsom [21]

Answer:

<h2>Most explained:</h2>

40% = 100%

15 = (100% - 15% = 85%) 85% in Alaska

California = 15% of 40 = (0.15 x 40) = 6

Alaska = 85% of 40 = (0.85 x 40) = 34

<h2>The simple way (or the way i found it simple):</h2>

<h3>(I found the simple way after i solve the first way)</h3>

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3 years ago

X + 5y = 8<br> -x + 2y = -1<br> How is this solved?

Oksi-84 [34.3K]

Add both the equations together to eliminate x

x+5y=8
-x+2y=-1

7y=7
y=1

Now fill in y into the original equation

x+5(1)=8
x+5=8
x=3

Now you can check by filling x and y into the second equation.

-(3)+2(1)=-1
-3+2=-1
-1=-1

So your answer will be (3, 1)

Brainliest my answer if it helps you out?

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3 years ago

How does the graph of the function g(x) = 5x + 1 differ from the graph of f(x) = 5*?

elena-14-01-66 [18.8K]

Answer:

C. It is translated up 1 unit.

Step-by-step explanation:

Translations of a function f(x)

To translate a function f(x) a units to the right, we have f(x-a)

To translate a function f(x) a units to the left, we have f(x+a)

To translate a function f(x) a units up, we have f(x) + a

To translate a function f(x) a units down, we have f(x) - a

In this question:

g(x) = 5x + 1

f(x) = 5x

This means that the function g(x) is 1 added to the function f(x), that is, it is translated up 1 units, and the correct answer is given by option c.

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3 years ago

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DaniilM [7]

12:11 because 11 are boys and 12 are girls

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4 years ago