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3 years ago

Evaluate the expression 8-3×2+5

Mathematics

1 answer:

siniylev [52]3 years ago

5 0

Answer:

Step-by-step explanation:

First do 3x2 to get 6, and then do 8-6, which is 2, and add that to 5 to get 7

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I need help on this:The perimeter of the square below is 36 yards. What is the length of each side?

jeka57 [31]

Hi so remember the perimeter of a square is 4 times the side. so if the perimeter is 36 then you can divide 36 by 4 to get the answer 9.

36=4^x
36=4x
36/4=x
9=x

to cross check if ever unsure times the (side) by 4 if it matches the given perimeter.

3 0

3 years ago

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What is a factor pair of 48 that adds up to 2?

dangina [55]

-6×8=-48

-6+8=2
Hope this helps have a good day!! ;)

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3 years ago

What is the measure of angle R?

tigry1 [53]

Option B:

25 degrees

Solution:

Given data in triangle PQR,

The side opposite to angle P is p.

The side opposite to angle Q is q.

The side opposite to angle R is r.

q = 36, r = 20, angle Q = 50°.

<u>To find the measure of angle R:</u>

Using law of sine,

$$\frac{a}{\sin A}=\frac{b}{\sin B}=\frac{c}{\sin C}$

$$\Rightarrow\frac{p}{\sin P}=\frac{q}{\sin Q}=\frac{r}{\sin R}$

Take only two sides.

$$\Rightarrow\frac{q}{\sin Q}=\frac{r}{\sin R}$

Substitute the given values.

$$\Rightarrow\frac{36}{\sin 50^\circ}=\frac{20}{\sin R}$

Do cross multiplication.

$\Rightarrow36\times\sin R = \sin50^\circ\times20$

sin 50° = 0.766

$\Rightarrow36\times\sin R = 0.766\times20$

$\Rightarrow36\times\sin R = 15.32$

$$\Rightarrow\sin R = \frac{15.32}{36}$

$$\Rightarrow\sin R = 0.4255$

$$\Rightarrow R = \sin^{-1}(0.4255)$

⇒ R = 25.18°

⇒ R = 25° (approximately)

Option B is the correct answer.

Hence the measure of angle R is 25 degrees.

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3 years ago

Which inequality represents a number n that is less than or equal to 3 but greater than -2?

Kisachek [45]

-2 < n $\leq$ 3

This inequality basically says "-2 is less than n, which is less than or equal to 3".

Mark as brainliest if this helped! :)

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3 years ago

The length of a rectangle is 5 more than twice the width. Which equation could represent the area of the rectangle in terms of t

liq [111]

Answer:

l=5+2w

Step-by-step explanation:

Since the length is twice the width plus 5, the equation would look like :

l=5+2w

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3 years ago

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