2 years ago

I NEED HELP ASAP!!!!!

Mathematics

1 answer:

lord [1]2 years ago

8 0

Answer:

Graph and solutions attached

Step-by-step explanation:

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Find the value of the expression if x=-7

LUCKY_DIMON [66]

Answer: -16

Step-by-step explanation:

49 would be the result of -7 squared. Due to the fact it is negative, it would cancel out to be positive.

For the numerator, 49-1 is equivalent to 48.

48/x+4

-7+4 = -3

48/-3

= -16

5 0

2 years ago

John’s father is 5 times older than John and John is twice as old as his sister Alice. In two years time, the sum of their ages

oksano4ka [1.4K]

Answer:

John’s age is 8 years

Step-by-step explanation:

Let

x -----> John’s father's age

y -----> John’s age

z -----> John’s sister's age

we know that

$x=5y$ -----> equation A

$y=2z$

$z=y/2$ -----> equation B

$(x+2)+(y+2)+(z+2)=58$

$x+y+z+6=58$

$x+y+z=52$ -----> equation C

Substitute equation A and equation B in equation C and solve for y

$5y+y+y/2=52$

Multiply by 2 both sides to remove the fraction

$10y+2y+y=104$

$13y=104$

$y=8$

<em>Find the value of x</em>

$x=5(8)=40$

<em>Find the value of z</em>

$z=8/2=4$

therefore

John’s father's age is 40 years

John’s age is 8 years

John’s sister's age is 4 years

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3 years ago

A rectangle has an area of 24 square units and a side length of 2 3/4 units. Find the other side length of the rectangle

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Length is 12, Width 2, and Area is 24

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A math club has 40 members. The number of girls is 5 less than 2 times the number of boys. How many members are boys? How many m

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15 girls and 25 boys

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HELP WITH QUESTION 14 AND 15 IF I GET THEM RIG U WILL GIVE BRAINLIEST

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Answer:

333 meters per second

Step-by-step explanation:

8 0

2 years ago

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