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2 years ago

You help me please can you help me please this is a very hard thank you

Mathematics

1 answer:

yan [13]2 years ago

8 0

The correct answer must be A

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Differences between 7 1/8 - 1 7/8

Mrrafil [7]

(7-1/8) - (1-7/8) = 57/8 -15/8 = 21/4

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2 years ago

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What is the value of x?

BlackZzzverrR [31]

We can use the Pythagorean theorum

a^2+b^2=c^2

c^2 is the length of the longest side squared

so

6^2 + b^2 = 10^2

36+ b^2 = 100
-36 -36

b^2 = 64

b = 8

b is the same thing as your "x", so x = 8

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2 years ago

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What is the slope of line m?

maxonik [38]

Answer:

Slope= -0.5

Step-by-step explanation:

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2 years ago

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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

$10y+2y+y=104$

$13y=104$

$y=8$

Find the value of x

$x=5(8)=40$

Find the value of z

$z=8/2=4$

therefore

John’s father's age is 40 years

John’s age is 8 years

John’s sister's age is 4 years

7 0

2 years ago

Given that a = 4.8 × 104 and that b = 8 × 10−3

Paha777 [63]

Answer:

3.84 * 10^0

Step-by-step explanation

Given the following values;

a = 4.8 × 104 and that b = 8 × 10−3

We are to find the product ab

ab = (4.8 × 10^4)(8 × 10^−3)

ab = (4.8*8)(10^4 * 10^-3)

ab = 38.4 * 10^(4-3)

ab = 38.4 * 10^-1

ab = 3.84 * 10 * 10^-1

ab = 3.84* 10^0

Hence the product in standard form is expressed as 3.84 * 10^0

8 0

2 years ago