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Vinil7 [7]
3 years ago
9

Find the sum of 4x ^ 2 - 7 and 6x ^ 2 - 5 .

Mathematics
2 answers:
OleMash [197]3 years ago
5 0

Answer:

Step-by-step explanation:

almond37 [142]3 years ago
3 0

Answer:

10x² - 12

Step-by-step explanation:

4x² - 7 + 6x² - 5 (combine like terms)

10x² - 12

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Plz help me out, i dont really understand this question, WILL GIVE BRAINLIEST TO THE MOST EDUCATED!!
allochka39001 [22]

Answer:

its 44 the answer

Step-by-step explanation:

I hope this helps

4 0
2 years ago
Read 2 more answers
The quadratic function d= -4x+1,100 models a snowboarder's distance, in feet, from the bottom of a hill x seconds after the snow
Fynjy0 [20]

Answer:

16 seconds (Approximately)

Step-by-step explanation:

Given:

The function that gives the distance of snowboarder from the bottom of hill with time 'x' is:

d=-4x^2+1100

Final position of the snowboarder is d=100\ ft

Now, plugging in 100 for 'd' and solving for 'x', we get:

100=-4x^2+1100

Adding -1100 both sides, we get:

100-1100=-4x^2+1100-1100\\-1000=-4x^2

Dividing both sides by -4, we get:

\frac{4x^2}{4}=\frac{1000}{4}\\x^2=250

Taking square root and neglecting the negative root as time can't be negative. So,

\sqrt{x^2}=\sqrt{250}\\x=5\sqrt{10}=15.8\ s\approx 16\ s

Therefore, after 16 seconds, the snowboarder will be at a distance of 100 ft from bottom of hill.

7 0
3 years ago
∠R and ∠S are complementary. If m∠R = (2x+7) and m∠S = (4x - 13), find m∠R
____ [38]

Answer:

m∠R = 39 degrees

Step-by-step explanation:

As complementary angles add up to 90 degrees, we can set up an equation to get x then find the measure of ∠R:

m∠R + m∠S = 90

2x+7+4x-13=90

6x+7-13=90

6x-6=90

6x=96

x=16

Since m∠R = (2x+7), 2x+7 would be 2(16)+7 or 39 degrees. So in conclusion, m∠R = 39 degrees

3 0
3 years ago
Read 2 more answers
On your paper, graph these coordinates:
Nataly [62]
1/4 trust me bro just took it
5 0
3 years ago
4x-5y=15<br> can someone plz explain this
AVprozaik [17]
Well if you are solving for y 
the answer is 

Y= 4/5x- 3

if you are solving for x 
the answer is 
X=5/4y + 15/4

*look at the image for the work*

7 0
3 years ago
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