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3 years ago

ASAP PLEASE PLEASE PLEASE

Mathematics

1 answer:

gavmur [86]3 years ago

4 0

1 is false,

2 is false,

3 is true,

4 is false.

1. Does 4 x 10^-7 = .2 (2 x 10^-5)?

4 x 10^-7 .4 x 10^-5

4 x 10^-7 4 x 10^-6

Nope!

2. Does 2 x 10^5 = 40(5 x 10^4)

2 x 10^5 200 x 10^4

2 x 10^5 2 x 10^6

Nope!

3. Does 6 x 10^4 = 2(3 x 10^4)

6 x 10^4 6 x 10^4

Yes!

4. Does 7 x 10^-5 = .1 x 7 x 10^-3?

7 x 10^-5 .7 x 10^-3

7 x 10^-5 7 x 10^-4

Nope!

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Trapezoids A and B are similar. Find the values of x and y.

Wewaii [24]

Step-by-step explanation:

when 2 shapes are similar, it means that all their angles are the same compared with each other.

and all distances (incl. side lengths) if one shape correlate to the corresponding distances in the other shadow by the same ratio or factor.

we have one side (30 m in A and 50 m in B), where we have both measures.

we see that the ratio to "go" from A to B is 30/50 = 3/5.

that means a distance in A is the same distance in B multiplied by 3/5.

and that factor is the same also for every other side.

therefore,

x = 15 m × 3/5 = 3 m × 3 = 9 m

y × 3/5 = 18 m

3y = 90 m

y = 30 m

3 0

2 years ago

Which equation can be used to solve for in the following diagram? (8x - 20)° 3xº

gayaneshka [121]

Answer:

A. 3x° + (8x - 20)° = 90°

Step-by-step explanation:

The two given angles are complementary and sum to 90°

3x° + (8x - 20)° = 90°

Therefore correct choice is A.

7 0

3 years ago

Solve for u.

STALIN [3.7K]

Answer:

5u-15=10 |+15

5u=25 |:5

u=5

The solution is 25

I hope it helps

have anice day

5 0

3 years ago

Read 2 more answers

Given the recursive formula shown, what are the first 4 terms of the sequence? image Question 19 options: A) 5, 20, 80, 320 B) 5

kvv77 [185]

Answer:

B) 5, 20, 80, 320

Step-by-step explanation:

Complete question

Given the recursive formula shown, what are the first 4 terms of the sequence?

f(1) = 5 if n=1

f(n) = 4f(n-1) if n> 1

A) 5. 25, 100, 400

B) 5, 20, 80, 320

C) 5, 25, 125, 625

D) 5. 14, 60, 236

Get f(2)

f(2) = 4f(2-1)

f(2) = 4f(1)

f(2) = 4(5)

f(2) = 20

Get f(3)

f(3) = 4f(3-1)

f(3) = 4f(2)

f(3) = 4(20)

f(3) = 80

Get f(4)

f(4) = 4f(4-1)

f(4) = 4f(3)

f(4) = 4(80)

f(4) = 320

Hence the first 4 terms of the sequence are 5, 20, 80 and 320

3 0

3 years ago

Brandon Brandon Drew the two congruent squares shown he divided one square into 2 congruent triangular parts he divided the othe

Luba_88 [7]

Incomplete question: Options

(a) Each triangular part and each rectangular part represents 1/2 the area of one square.

(b) Each triangular part has an area that is greater than the area of each rectangular part.

(d) Each rectangular part has an area that is greater than the area of each triangular part.

See attachment for squares

Answer:

(a) Each triangular part and each rectangular part represents 1/2 the area of one square.

Step-by-step explanation:

Given

See attachment

Required

Which statement is true

Before the division, the area of both squares is:

$Area = l * w$

After the division:

The area of the triangle is:

$Area = \frac{1}{2} * base * height$

$A_1 = \frac{1}{2} * l * w$

Substitute Area for l * w

$A_1 = \frac{1}{2} *Area$

This equals half the area of the square

The area of the rectangle is:

$Area = length * width$

The length of the rectangle is now half the length of the original square.

So, we have:

$A_2 = \frac{1}{2} l * w$

Substitute Area for l * w

$A_2 = \frac{1}{2} *Area$

From the values of A1 and A2, we can conclude that (a) is true

5 0

3 years ago