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3 years ago

HELP ME PLEASE!!!!!!!!

Mathematics

1 answer:

Svet_ta [14]3 years ago

7 0

Okay so i did this question before love , the answer should be b

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Factor the polynomial completely using any method. Show steps.<br> 2d^4-13d^2-45

Alinara [238K]

Answer:

$\huge ( {2d}^{2} + 5)(d + 3)(d - 3)$

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>

factoring
PEMDAS

<h3>given:</h3>

$2d^4-13d^2-45$

<h3>let's solve:</h3>

$2d^4-13d^2-45$

$2 {d}^{4} + 5 {d}^{2} - 18 {d}^{2} - 45 \\ {d}^{2} ( {2d}^{2} + 5) - 9( {2d}^{2} + 5) \\ ( {2d}^{2} + 5)( {d}^{2} - 9 )\\ ( {2d}^{2} + 5)(d + 3)(d - 3)$

3 0

3 years ago

ANSWER FAST!!!! The school bus travels at an average speed of 30 miles an hour in the morning because of the traffic. Diego's Ho

ipn [44]

If he is going 30 miles and Diego is adopted then he is going to arrive at the school at 7:22

7 0

3 years ago

Read 2 more answers

What is 12.45 as a fraction

barxatty [35]

= 1245/100

= 249/20

= 12 9/20

6 0

4 years ago

Read 2 more answers

A store pays $ 56 for a cell phone. The store marks the price at 20%. What is the quantity of the mark?

galben [10]

Answer:

The quantity of the mark is $11.20

Step-by-step explanation:

Given that:

Amount paid by store for cell phone = $56

The store marks the price at 20%.

Quantity of the mark = 20% of 56

Quantity of the mark = $\frac{20}{100}*56$

Quantity of the mark = 0.2 * 56

Quantity of the mark = $11.20

Hence,

The quantity of the mark is $11.20

4 0

3 years ago

Given ΔRST congruent to ΔNPQ, m∠R = -7x + 9, m∠N = -10x, find m∠R and m∠N. <br><br> PLEASE HELP

zepelin [54]

Answer: m∠R=30° m∠N=30°

If ΔRST is congruent to ΔNPQ, then we can infer that m∠R is congruent to m∠N

m∠R=-7x+9

m∠N=-10x

If both angles are congruent, we can solve for x...

-7x+9=-10x
add 7x to both sides
9=-3x
divide both sides by -3
-3=x

Now that we know the value of x, we can solve for the measure of the angles.

m∠R=-7x+9
m∠R=-7(-3)+9
m∠R=21+9
m∠R=30°

m∠N=-10x
m∠N=-10(-3)
m∠N=30°

6 0

3 years ago