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2 years ago

AB is perpendicular to CD. How many 90 degree angles are formed by the intersection

Mathematics

2 answers:

Alex73 [517]2 years ago

8 0

It should be 4 90°angles

ladessa [460]2 years ago

4 0

There will be 4 90 degree angles

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If Linda can walk 6 miles in 80 minutes,

Marta_Voda [28]

I think it is 4.5 miles per hour

8 0

2 years ago

4. Liam can work at most 20 hours a week but he needs to earn at least $125. His dog-walking job pays

Oxana [17]

Two possible solutions are: (4.5, 8.5) and (8, 6.3)

<h3>How to graph the inequality?</h3>

Let x represents hours dog walking and y represents hours washing cars.

So, we have:

Earnings = Rate of dog walk * x + Rate of car wash * y

This gives

Earnings = 7x + 11y

He wants to earn at least $125.

This means that:

7x + 11y ≥ 125

See attachment for the graph of the inequality

From the attached graph, two possible solutions are: (4.5, 8.5) and (8, 6.3)

Read more about inequalities at:

brainly.com/question/25275758

#SPJ1

8 0

2 years ago

What is the solution to<br> a>-16?

Anna11 [10]

Answer:

that is the solution

Step-by-step explanation:

it cannot be simplified

8 0

3 years ago

A box contains 9 green marbles and 17 white marbles. If the first marble chosen was a white marble, what is the probability of c

pshichka [43]

Answer:

16/25

Step-by-step explanation:

Given

Number of green marbles = 9

Number of White marbles = 17

Total number of marbles = 26

Probability of picking a white marble = 17/26

When a white marble is picked without replacement,

Probability of picking another white marble after first picking a white marble

= 16/25

= 0.64

This is because the total number of marbles would have reduced from 26 to 25 and the number of white marbles from 17 to 16.

4 0

3 years ago

A triangular pyramid has an isosceles triangular base. The base edge of the triangular base is 10

tester [92]

Answer:

h=94.87

Step-by-step explanation:

1. Volume of pyramid formula:

$v=\frac{1}{3}*a^{2}*h$

$a=b*h$ Base Edge * Height of Pyramid

2. We have variables:

V = 480, Base Edge = 10, Height of Base = 16 (Inch)

3. Plug into formula + Rearrange:

$\frac{3V}{h} =(b*h)^{2} [b^{2} *h^{2} ]$

$\frac{3V*b^{2} }{h} =h^{2}$

$h^{2}=\frac{3*480*10^{2} }{16}$

$h=\sqrt{9000}$

h≅94.868

7 0

2 years ago