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3 years ago

8

Which trinomials are perfect square trinomials?

1 answer:

dexar [7]3 years ago

6 0

A and C are correct because they can be factorized to get (a+6)(a-6) and (w+11)(w-11) while B and D can't be factorized to get those
please mark as brainliest

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Jacob earned $80 babysitting and deposited the money into his savings account.The next week he spent $85 on video games.Use inte

IgorC [24]

Answer:

Here's what I get

Step-by-step explanation:

$\begin{array}{cccc}\bf{Week}& \textbf{Earned/Spent} & \textbf{Change} & \textbf{Net Change}\\1 & \text{Earned \$80} & + 80 & + 80\\2 & \text{Spent \$85} & \mathbf{- 85} &\mathbf{-5}\\\end{array}$

The net chance in Jacob's savings was +80 in the first week, -85 in the second week, and -5 overall.

3 0

3 years ago

In triangle ABC, find B, to the nearest degree, given a=7, b=10, and C is a right angle.

7nadin3 [17]

Answer:

Option D is correct i.e angle B is 55°

Step-by-step explanation:

Given In triangle ABC, a=7, b=10 and angle C is a right angle.

we have to find the angle B.

As given triangle is right angled triangle,

∴ we can apply the formula of trigonometric ratios to find the angle B

$tanB=\frac{AC}{CB}=\frac{10}{7}$

⇒ $B=tan^{-1}(\frac{10}{7})=0.96 radian=55.0079^{\circ}\sim55^{\circ}$

Hence, angle B is 55°

Option D is correct.

5 0

3 years ago

Q2: What is the radius? Because this is an approximation use 3.14 as pi. Round to

bija089 [108]

Answer:

r=11 m

Step-by-step explanation:

Too lazy to explain:

πr²h=v

3.14*r²*12=4560

r²≈121

r is 11 m

4 0

3 years ago

Read 2 more answers

Use the quadratic formula to write a quadratic equation that has the solutions x=-4 ± 2/6.

yKpoI14uk [10]

Step-by-step explanation:

general formula

x²-(a+b)x+(ab)

where a is alpha

and b is beta

x=-4+2/6 or x=-4-2/6

x=-1/3 or x=-1

a+b=-1/3 + -1 =-4/3

ab= -1/3 x -1 =1/3

quadratic equation

x²-(-4/3)x + 1/3=0

x² + 4/3x + 1/3=0

multiply through by 3

3x² +4x +1=0

3 0

2 years ago

Read 2 more answers

Which description describes the solutions to this inequality? q>52

Sophie [7]

Answer:

all the positive numbers that are larger than twenty-five

Step-by-step explanation: MAR ME BRAINLIEST PLEASE

hope this helps

5 0

3 years ago