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garri49 [273]
4 years ago
5

HELP!!!! WILL MARK!!!!

Mathematics
2 answers:
vaieri [72.5K]4 years ago
7 0
1. A~ 2r^2 + 15r-50

2. B~ k^2 - 4k+3
Bumek [7]4 years ago
6 0
(2r - 5)(r+10)
=2r^2 +20r -5r - 50
=2r^2 +15r  - 50
answer:
2r^2 +15r  - 50 (first choice)

(k-3)(k-1)
=k^2 - 3k - k + 3
=k^2 - 4k +3

answer 
k^2 - 4k +3 (second choice)

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The weight of a giant panda is 10 times the weight of a red panda. The combined weight of the pandas is 220 pounds. What is the
Natasha_Volkova [10]

Answer:

The weight of a giant panda = x = 200 pounds

The weight of a red panda = y = 20 pounds

Step-by-step explanation:

Let

The weight of a giant panda = x

The weight of a red panda = y

The weight of a giant panda is 10 times the weight of a red panda.

x = 10y

The combined weight of the pandas is 220 pounds.

x + y = 220

We substitute 10 y for x

10y + y = 220

11y = 220

y = 220/11

y = 20 pounds

Solving for x

x = 10y

x = 10 × 20

x = 220 pounds

Hence:

The weight of each panda is:

The weight of a giant panda = x = 200 pounds

The weight of a red panda = y = 20 pounds

3 0
3 years ago
Read 2 more answers
Figure STOP is reflected about the y-axis to obtain figure STO′P: A coordinate plane with two quadrilaterals is shown. Figure ST
gogolik [260]

Answer:

Figure STOP is congruent to figure S′T′O′P′.

Step-by-step explanation:

I just took the test

6 0
4 years ago
PLEASE HELP WILL MARK BRAINLIEST AND GIVE 50 POINTS
Alexeev081 [22]

Answer:

The correct option is;

e. 2500

Step-by-step explanation:

The formula for sample size is given by the following formula;

n = \dfrac{z^2 \times \hat p(1 - \hat p)}{\epsilon ^2}

At 95%, z = 1.96

ε = Margin of error = 0.02 = 2%

Finding the sample size, n, given only the margin of error is by the following formula;

Margin of error = 100/√n

Therefore, we have;

2 = 100/√n

√n = 100/2 = 50

n = 50² = 2500

Therefore, the correct option is e. 2500.

4 0
3 years ago
-18=d+4 plZ hurry thank you so much have a great day
Yuliya22 [10]

Answer:

d = - 22

Step-by-step explanation:

- 18 = d + 4 ( subtract 4 from both sides )

- 22 = d

4 0
3 years ago
HELP! I NEED THE TWO EQUATIONS AND THE COST OF ONE PACKAGE OF BROWNIES AND ONE PACKAGE OF CUPCAKES
amid [387]

Answer:

Brownie package = 4.25

cupcake package = 3.50

Explanation

4.25 x 4 + 3.50 x 2 = 24

PLZ MARK BRAINLIEST IF HELPED

3 0
3 years ago
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