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Marat540 [252]
2 years ago
7

Combine like terms (2+7x)(2-7x)=

Mathematics
1 answer:
Aleksandr [31]2 years ago
7 0

Answer: 4-49x²

Step-by-step explanation:

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7. Sapna travelled 48 km to meet her parents. She travelled the first 18 km by car and the remaining distance by train. Find the
Anton [14]

The fraction of the journey Sapna traveled by car and train is 3/8 and 5/8 respectively.

We know that fraction is an expression in mathematics used to denote the division of two whole numbers.

Given that the total distance = 48 km.

The distance Sapna traveled by car = 18 km.

So, the fraction is = distance traveled by car/total distance = 18/48 = 3/8

The distance Sapna traveled by train = 48 - 18 km = 30 km.

So, the fraction is = distance traveled by train/total distance = 30/48 = 5/8

Therefore the fraction of the journey Sapna traveled by car and train is 3/8 and 5/8 respectively.

Know more about fractions here -

brainly.com/question/10354322

#SPJ10

6 0
2 years ago
HELP I DONT KNOW THESE :(
Leya [2.2K]
The answer is -1 and 2
5 0
3 years ago
A rocket is launched from a tower. The height of the rocket, y in feet, is related to the
sladkih [1.3K]

Answer:

10.17 seconds

Step-by-step explanation:

substitute y=0 into the equation

0=-16x²+153x+98

then use the quadratic formula

a = -16

b= 153

c = 98

Substituting values into the Quadratic equation, you get (Round the values to the nearest hundreth):

x₁= 10.17

x₂= -0.60

5 0
2 years ago
A cookie jar contains 2 chocolate chip cookies, 4 peanut butter cookies, and 3 sugar cookies. A child chooses one cookie at rand
marishachu [46]

Answer:

Peanutbutter 44%

Chocolate chip 22%

Step-by-step explanation:

5 0
3 years ago
If thirty students come to school and 10% go home sick, how many students went home sick? Must show your work.
Lunna [17]
3

if 30 = 100%  and 10% went home sick, so 30*0.10
which is 3.

7 0
3 years ago
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