3 years ago

Pls pls pls help me

Mathematics

1 answer:

Sonja [21]3 years ago

4 0

Answer:

It's B. Good luck! :)

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If ∠C and ∠D are vertical angles and m ∠ C = x + 5 and m ∠ D = –2x + 80, what is m ∠ C?

amm1812

Answer:

m∠C=30°

Step-by-step explanation:

we know that

<u>Vertical Angles</u> are the angles opposite each other when two lines cross. They are always equal

m∠C=m∠D

substitute the given values

$(x+5)\°=(-2x+80)\°$

Solve for x

$x+2x=80-5\\3x=75\\x=25$

<em>Find the measure of angle C</em>

m∠C=(x+5)°

substitute the value of x

m∠C=(25+5)=30°

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3 years ago

Mrs. Blair believes there is a relationship between the number of minutes students study and their test grades. She asked her hi

kodGreya [7K]

Answer:

I would say C 80. I'm not fully sure tho.

Step-by-step explanation:

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2 years ago

Which expressions are equivalent to the one below? Check all that apply.

dalvyx [7]

5^3(5^x) the rule is a^b(a^c)=a^(b+c)

5^(3+x)

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3 years ago

For all values of x, which expression is equivalent to 2x + 5 − x + 3x + x − 2?

koban [17]

Answer:

5x + 3

Step-by-step explanation:

1) Collect like terms.

(2x − x + 3x + x) + (5 − 2)

2) Simplify

5 x + 3

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Read 2 more answers

Calculate simple interest earned on a deposit of $1000 at a rate of 3% for 10 years.

Degger [83]

$\bf ~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\\ P=\textit{original amount deposited}\dotfill & \$1000\\ r=rate\to 3\%\to \frac{3}{100}\dotfill &0.03\\ t=years\dotfill &10 \end{cases} \\\\\\ I=(1000)(0.03)(10)\implies I=300$

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3 years ago