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dexar [7]
3 years ago
8

Question 4 (10 points)

Mathematics
1 answer:
skelet666 [1.2K]3 years ago
3 0

use math photo It will be easy

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Earthquakes and volcanic eruptions. What is their cause?
jok3333 [9.3K]

Answer:

plates shifting continental drift

8 0
3 years ago
PLSSSSSSSSSSS HELPPP>> Show work solve the sysytem- y=1/2x^2+4x+4 y=-4x+12 1/2
Mrac [35]

Answer:

(1, 8.5 ) and ( - 17, 80.5 )

Step-by-step explanation:

Given the 2 equations

y = \frac{1}{2} x² + 4x + 4 → (1)

y = - 4x + 12 \frac{1}{2} → (2)

Substitute (1) into (2), that is

\frac{1}{2} x² + 4x + 4 = - 4x + 12 \frac{1}{2} ( multiply through by 2 to clear the fractions )

x² + 8x + 8 = - 8x + 25 ( add 8x to both sides )

x² + 16x + 8 = 25 ( subtract 25 from both sides )

x² + 16x - 17 = 0 ← in standard form

(x + 17)(x - 1) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 17 = 0 ⇒ x = - 17

x - 1 = 0 ⇒ x = 1

Substitute these values into either of the 2 equations and evaluate for y

Substituting into (2 )

x = 1 : y = - 4(1) + 12.5 = - 4 + 12.5 = 8.5 ⇒ (1, 8.5 )

x = - 17 : y = - 4(- 17) + 12.5 = 68 + 12.5 = 80.5 ⇒ (- 17, 80.5 )

5 0
3 years ago
Please help with this acellus question!
Anna11 [10]

Answer:

The value of x is 5

Step-by-step explanation:

In the given triangle

∵ A segment joining two points lie on the two side

∵ This segment is parallel to the third side

∴ This segment divides the two sides into parts that have the same ratio

→ That means x over 2x - 3 equal to 10 over 14

∵ \frac{x}{2x-3} = \frac{10}{14}

→ By using cross multiplication

∴ 10 × (2x - 3) = x × 14

∴ 10(2x) - 10(3) = 14x

∴ 20x - 30 = 14x

→ Add 30 to both sides

∵ 20x - 30 + 30 = 14x + 30

∴ 20x = 14x + 30

→ Subtract 14x from both sides

∵ 20x - 14x = 14x - 14x + 30

∴ 6x = 30

→ Divide both sides by 6

∴ x = 5

∴ The value of x is 5

6 0
3 years ago
Miguel picked a total of 25 tomatoes and cucumbers at the community garden. He picked four times as many tomatoes as cucumbers.
Stolb23 [73]

Answer: 100

Step-by-step explanation:

Because 25x4= 100 sorry if it’s wrong

7 0
3 years ago
Read 2 more answers
Perform the following division. Be sure answers are reduced to lowest terms. 2 7/8 ÷ 1/4 =
nalin [4]

Answer:

11 1/2.

Step-by-step explanation:

2 7/8 / 1/4

= 23/8 / 1/4

= 23/8  *  4

= 23/2

= 11 1/2

8 0
3 years ago
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