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3 years ago

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There\ were\ 750\ questions\ in\ a\ mathematics\ book.\ \ Sam\ answered\ 82\%\ of\ them\ correctly.\ \ how\ many\ questions\ did

\ he\ answer\ in\ correctly?\newline

1 answer:

aniked [119]3 years ago

6 0

Answer: 135

Step-by-step explanation:

Multiply 750 times .82 and then substract the result from 750

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A box in the shape of a rectangular prism has a length of 3 inches, a width of 2 inches,

Maru [420]

answer: 24

Step-by-step explanation: 3x2x4= 24

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3 years ago

A partir dos valores a seguir, determine a lei da função.

chubhunter [2.5K]

Answer:

Ela segue esse modelo

f(x) = ax + b

Então, é só substituir os valores de x e de y na Lei de Formação

Ex: quando x=0, y=-1

y= ax+b

-1=a.0+b

b= -1

È onde a reta toca o eixo y, porque x=0

Agora, vamos usar outro par ordenado.

Quando x=2, y=3

3=a.2+(-1)

3=2a-1

3+1=2a

4=2a

a=4/2

a=2

A lei de formação é essa

a= 2; b=-1

f(x)= ax+b

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3 years ago

What is the value of 10^6?

ss7ja [257]

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3 years ago

The law of cosines is used to find the measure of Z.

Shtirlitz [24]

Answer:

C. $Z=51^{\circ}$

Step-by-step explanation:

We have been given a triangle. We are asked to find the measure of angle Z using Law of cosines.

Law of cosines: $c^2=a^2+b^2-2ab\cdot \text{cos}(C)$ , where, a, b and c are sides opposite to angles A, B and C respectively.

Upon substituting our given values in law of cosines, we will get:

$16^2=19^2+18^2-2(19)(18)\cdot \text{cos}(Z)$

$256=361+324-684\cdot \text{cos}(Z)$

$256=685-684\cdot \text{cos}(Z)$

$256-685=685-685-684\cdot \text{cos}(Z)$

$-429=-684\cdot \text{cos}(Z)$

$\frac{-429}{-684}=\frac{-684\cdot \text{cos}(Z)}{-684}$

$0.627192982456=\text{cos}(Z)$

$\text{cos}(Z)=0.627192982456$

Now, we will use inverse cosine or arc-cos to solve for angle Z as:

$Z=\text{cos}^{-1}(0.627192982456)$

$Z=51.1566718^{\circ}$

$Z\approx 51^{\circ}$

Therefore, the measure of angle Z is approximately 51 degrees.

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3 years ago

Read 2 more answers

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Stells [14]

5.5 quarts equals 22 cups. (There are 4cups in a quart, so 4 * 5.5 = 22)

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3 years ago