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3 years ago

Please help!!!!!! I will give brainliest!!

Mathematics

1 answer:

Zinaida [17]3 years ago

8 0

Step-by-step explanation:

6 = 3(-1) +9 yes this is true

5(-1) +6 = 1 Yes this is true

so yes it's a solution because it works in both equations.

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Kendra has $ 7.35 in nickels and quarters. If she has 15 more quarters than nickels, how many of each coin does she have?

lozanna [386]

x*5 - quarter amount

(x+15)*25- nickels amount

(x*5)+((x+15)*25)=735

5x+25x+375=735

30x=735-375

30x=360

x=360/30=12 - number of nickels

x+15=12+15=27 - number of quarters

CHECK

12*5=60 ¢

27*25=675 ¢

675+60=735 ¢ or $7.35

5 0

4 years ago

Sam plays a basketball training game, she gets s points for every basket. The equation ya shows the total number of points she s

Alenkasestr [34]

Answer:

Step-by-step explanation:

On my screen it is C. Which is number of baskets on the bottom and total pints in the side. Hope this helps:)

7 0

3 years ago

The function y = -16x2 + 1500 gives a parachute jumper's height y in feet

earnstyle [38]

Answer:

Step-by-step explanation:

so the question is asking about the time from 1500 feet to 1100 feet. How long did they fall, w/o a parachute. aka "freefall" so, at 1500 feet the jumper is really at time zero. so, plug in to the formula

1100 = -16 $x^{2}$ +1500

( x represents seconds so i'll change it to t so we know it's time )

1100 = -16 $t^{2}$ + 1500

now we can solve for t , to see how long the jumper falls

-400 = - 16 $t^{2}$ ( subtracting 1500 from both sides of equation )

25 = $t^{2}$ ( dividing both sides by -16 )

oh.. look at how nice that turns out.. :)

$\sqrt{25}$ = t ( take the square root on both sides )

5 = t

the jumper fell for 5 seconds to get to 1100 feet

5 0

3 years ago

The question I have is this 90+30+a=180

pashok25 [27]

Answer:

a = 60

Step-by-step explanation:

90 + 30 = 120

120 - 180 = 60

4 0

4 years ago

Read 2 more answers

Helpp

Ugo [173]

The missing statement and reasons are;

Statement 5; 12x + 20 = 11x + 23

Reason 2; Vertically opposite angles are equal

Reason 4; Transitive property of equality.

Reason 6; Subtraction Property of Equality.

We are given that;

∠BDA ≅ ∠A

We want to prove that; x = 3

Statement 1; ∠BDA ≅ ∠A

Reason; It is Given

Statement 2; ∠BDA ≅ ∠CDE; The statement means they are congruent and equal.

Reason; Vertically opposite angles are equal

Statement 3; ∠CDE ≅ ∠A; This means ∠CDA is congruent to ∠A.

Reason; Transitive property of congruence.

Statement 4; m∠CDE = m∠A. We saw that ∠BDA ≅ ∠A and ∠BDA ≅ ∠CDE. Thus, by transitive property of equality, we can say that; m∠CDE = m∠A.

Reason; Transitive property of equality.

Statement 5; 12x + 20 = 11x + 23

Reason is; Substitution property of equality

Statement 6; 12x = 11x + 3; In statement 5 above, what was done to get this statement 6 was to subtract 20 from both sides. This is known as subtraction property of equality.

Reason; Subtraction Property of Equality.

Read more at; brainly.com/question/25043995

3 0

3 years ago