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3 years ago

I need help ASAP!!! will give brainliest!!

Mathematics

1 answer:

Elena L [17]3 years ago

5 0

The answer is the first choice

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Let f(x) = 2x^2 + 7x - 5 and g (x) = -8x^2 -3x + 5 what is g(x) + f(x)

babunello [35]

2x^2+7x-5+(-8x^2-3x+5)=-6x^2+4x.

6 0

3 years ago

Solve for x. Round to the nearest tenth, if necessary.

e-lub [12.9K]

Answer:

$\boxed {\boxed {\sf x \approx 1.9}}$

Step-by-step explanation:

We are asked to find x, a missing side in a triangle.

This is a right triangle because there is a small square in the corner representing a 90 degree or right angle. Therefore, we can use right triangle trigonometry. The three main functions are:

sinθ= opposite/hypotenuse
cosθ= adjacent/hypotenuse
tanθ= opposite/adjacent

Examine the triangle. We will use angle S, measuring 54 degrees, for theta. Side QR, measuring x, is opposite angle S. Side QS, measuring 2.3, is the hypotenuse because it is opposite the right angle. Since we have the opposite and hypotenuse, we will use sine.

$sin \theta = \frac {opposite}{hypotenuse}$

θ= 54
opposite= x
hypotenuse = 2.3

$sin (54)= \frac{ x}{2.3}$

We are solving for x, so we must isolate the variable. It is being divided by 2.3 The inverse operation of division is multiplication, so we multiply both sides by 2.3

$2.3* sin (54)= \frac{x}{2.3}*2.3$

$2.3* sin (54)=x$

$2.3*0.8090169944=x$

$1.860739087 =x$

Round to the nearest tenth. The 6 in the hundredth place to the right tells us to round the 8 up to a 9.

$1.9 \approx x$

x is approximately 1.9

7 0

3 years ago

02:42:33

jeyben [28]

Answer: -10

Step-by-step explanation:

It is -10 because you have to switch the order of operations to get negative.

Hope it helps!

6 0

3 years ago

The top row contains solutions for the value of c. The bottom row contains equations that must be solved to find c. Drag each so

aliya0001 [1]

1. c is 4 times as many as 5 = 20
2. 27 is c times as many as 3 = 9
3. 6 times as many as c is 72 = 12
4. 8 more than c is 15 = 7
Pls give me the brainliest if these are right. Hope this helps

6 0

2 years ago

What is 7:x=2:3 Solve for x

geniusboy [140]

Answer:

10.5

Step-by-step explanation:

Step 1:

7 : x = 2 : 3 Equation

Step 2:

2x = 21 Multiply

Step 3:

x = 21 ÷ 2 Divide

Answer:

x = 10.5

Hope This Helps :)

5 0

3 years ago