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Salsk061 [2.6K]
3 years ago
12

How do you solve 7x-2=x²-10? Can you show the steps please :)

Mathematics
1 answer:
nekit [7.7K]3 years ago
8 0

Answer: x=−1 or x=8

Step-by-step explanation: 7x−2=x2−10

Learn how to solve quadratic equations

Khan Academy Video: Solving a quadratic by factoring

Khan Academy Video: Quadratic Formula 1

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Combine the like terms to simplify the expression 2x+3y-5x+4y-8z
SIZIF [17.4K]

Answer:

7y-3x-8z

Step-by-step explanation:

(3y+4y)+(2x-5x)-8z

7y+(2x-5x)-8z

7y-3x-8z

6 0
2 years ago
Use the angle and the given side to solve for the value of x. Round to the nearest tenth.57°6.х
Svetllana [295]

Given data:

The first angel given is ∠1=54 degrees.

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7 0
1 year ago
An operator at the top of a lighthouse sights a sailboat. The point from which the sighting is made is 25 m above sea level. The
Aneli [31]

Answer:

141.78 m

Step-by-step explanation:

Let d = distance of boat from the base of the lighthouse

Tan 10 = 25/d

d tan 10 = 25

d = 25/tan 10

d = 141.78 m

4 0
3 years ago
Pls help me if u can
mario62 [17]

Answer:

523.33 cm³

Step-by-step explanation:

Formula of volume of sphere

= \frac{4}{3} \pi  {r}^{3}

The volume of the sphere

=  \frac{4}{3}  \times 3.14 \times  {5}^{3}

= \frac{1570}{3}

= 523.3333333...

= 523.33 cm³ (rounded to the nearest hundredth)

4 0
2 years ago
In the figure below, find the exact value of y. (Do not approximate your answer.)
e-lub [12.9K]

The exact value of the y in the similar right triangle is 2.2360679775 units

<h3 /><h3>How to find the side of a triangle?</h3>

The triangles are similar.

Similar triangles have corresponding sides of equal ratio.

The corresponding angles of similar triangle are equal.

Therefore, using similar ratio,

y / 5 = 1 / y

cross multiply

y × y = 5 × 1

y² = 5

square root both sides

y = √5

Therefore,

y = 2.2360679775 units

learn more on triangles here: brainly.com/question/2773823

#SPJ1

8 0
2 years ago
Read 2 more answers
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