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postnew [5]
3 years ago
10

I need help with this one too

Mathematics
1 answer:
erastova [34]3 years ago
5 0
Number 7 is C.

Number 8 is a.
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Subtract. Your answer should be a polynomial in standard form. (-7d2 – 5d f3 – 3f3) - (8d+ 4d f3 +253)​
lapo4ka [179]

Answer:

-9df^3 - 3f^3 - 7d^2 - 8d - 15625

Step-by-step explanation:

8 0
3 years ago
Solve the equation 4y² = 7y​
Charra [1.4K]
The answer is Y=7/4
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7 0
2 years ago
Three ballet dancers are positioned on stage. Elizabeth is straight behind Hannah and directly left of Manuel. If Hannah and Eli
ki77a [65]

Answer: Elizabeth and Manuel have a distance of 4 meters between them.

Step-by-step explanation: Please refer to the picture attached.

From the information given, Elizabeth is directly behind Hannah and directly left of Manuel. That means we have three points which are HEM, that is, we now have triangle HEM. The longest side (hypotenuse) which is the distance between Hannah and Manuel is given as 5 meters while the other side the distance between Hannah and Elizabeth is given as 3 meters.

We shall apply the pythagoras theorem in solving for the unknown side, EM.

The Pythagoras theorem states thus;

AC² = AB² + BC²

Where AC is the hypotenuse, and AB and BC are the other two sides.

Substituting for the known values, we now have;

5² = 3² + EM²

25 = 9 + EM²

Subtract 9 from both sides of the equation

16 = EM²

Add the square root sign to both sides of the equation

√16 = √EM²

4 = EM

Therefore the distance between Elizabeth and Manuel is 4 meters

8 0
3 years ago
Cara is 14 years old . This is twice as old as her brother . How old is her brother
Alenkinab [10]

Cara's brother is 7 years old.

14 is twice as much as 7 (7 * 2 = 14).

6 0
3 years ago
Read 2 more answers
If 10% of x is 20, what is 23% of x?
swat32
<span>If 10% of x is 20, 
----------
</span><span>then x = 200.</span><span>what is 23% of x?
----------
23% = (23/100)*200 = 46</span>
5 0
3 years ago
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