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Lostsunrise [7]
3 years ago
8

I am so stuck plz help me simplify these

Mathematics
2 answers:
Juliette [100K]3 years ago
6 0
A+a+a=3a
b+b+c+c+c=2b+3c
the last one-13a+11b+10c
pishuonlain [190]3 years ago
4 0

Answer:

3a

2b + 3c

3d + 2e

5g

2a

14b

10d + 21e

7m + 14n

12p + 18q

13a + 11b + 10c

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Could someone help please
pogonyaev

Answer:

3.5 m/s

Step-by-step explanation

Remove brackets

d = t^2 + 0.2t + 3.3t + .66              

Combine

d = t^2 + 3.5t + .66

The initial velocity  is 3.5

3 0
2 years ago
PLEASE HURRY
horsena [70]

Answer:6,2

Step-by-step explanation:you need to add each step and divide

8 0
3 years ago
Read 2 more answers
Can someone please help me out with this? I will give brainliest if it lets me!
AlekseyPX

Answer: D is the correct answer

7 0
3 years ago
Find the midpoint of the segment with the following endpoints. (7,−2) and (1,−10)
Zinaida [17]

Answer:

The answer is

<h2>(4 \:  , \:  - 6)</h2>

Step-by-step explanation:

The midpoint M of two endpoints of a line segment can be found by using the formula

<h3>M  = ( \frac{x1 + x2}{2} ,  \:  \frac{y1 + y2}{2} )</h3>

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

(7,−2) and (1,−10)

The midpoint is

<h3>M = ( \frac{7 + 1}{2}   ,  \:  \frac{ - 2 - 10}{2} ) \\  = ( \frac{8}{2} , \:  -  \frac{12}{2} )</h3>

We have the final answer as

<h3>(4 \:  , \:  - 6)</h3>

Hope this helps you

3 0
3 years ago
A gas station sells two grades of gasoline: regular and super. These are priced at $2.00 and $3.00 per gallon, respectively. Let
djyliett [7]

Answer:

(a) E(Y) = 4400

sd (Y) =225

(b)  P(Y ≤ 4500) = 0.67003

(c) P (X₁ > X₂) = 0.31744

Step-by-step explanation:

(a) Here we have

Y = 2·X₁ + 3·X₂

Therefore E(Y) = 2·E(X₁) + 3·E(X₂) = 2000 + 2400 = 4400

sd(Y) is given by

Variance Y = (sd (Y))² = 2²·(sd (X₁))² + 3²·(sd (X₂))²

= 4·8100 + 9·2025 =  50625

sd (Y) = √50625 = 225

(b) The probability that the revenue does not exceed 4500 is given by

P(Y ≤ 4500) =  P(z ≤0.444)

z = \frac{\overline{\rm x} - \mu} {\sigma /\sqrt{n} }

z = \frac{4500 - 4400} {225 /\sqrt{1} } = 0.444

Therefore from the normal distribution table, we have

P = 0.67003

(c) The probability that the P(X₁ > X₂)

Since the gas station sells 2 portions of X₁ to 3 portions of X₂

Therefore, the probability that the gas station sells more of X₁ is given by

₅C₀ × 2/5⁰×3/5⁵ = 0.07776

₅C₁ × 2/5¹×3/5⁴=  0.2592

₅C₂ × 2/5²×3/5³ = 0.3456

P (X₁ > X₂) = 1 - 0.68256 = 0.31744

6 0
3 years ago
Read 2 more answers
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