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3 years ago

Find two numbers, if … b Their sum is −7 and their difference is 14

Mathematics

1 answer:

Delicious77 [7]3 years ago

4 0

Answer:

x=0

y=-21/7

Step-by-step explanation:

Let the two unknown be x and y

x+y=-7...(1)

x-y=14...(2)

From (1) make x the subject of formula

x=-7-y...(3)

Substitute (3) into (2)

-7-y-y=14

-7-2y=14

Add 7 to both sides

-2y=21

Add both sides by-2

y=-21/2

Substitute the value of y into (3)

x=-7-(-21/2)

x=-7+21/3

Lcm

x=-21+21/3

x=0/3

x=0

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Find the value of this fraction 6 x 1/2 + 2/3 + 3/4

kodGreya [7K]

Answer:

$\frac{53}{12} or 4 \frac{5}{12}$

Step-by-step explanation:

$\frac{6}{1} \times \frac{1}{2} = 3$

$\frac{3}{1} + \frac{2}{3} + \frac{3}{4} = ...$

Find the common denominator, which is 12

$\frac{36}{12} + \frac{8}{12} + \frac{9}{12} =$

Now add them

$\frac{36}{12} + \frac{8}{12} = \frac{44}{12} + \frac{9}{12} = \frac{53}{12}$

Simplified version is

$4 \frac{5}{12}$

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3 years ago

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The maximum weight allowed per car on The Twister carnival ride is 263 pounds. Your friend weighs 86 pounds. To be able to ride

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Answer:

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Step-by-step explanation:

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3 years ago

1) Find the circumference and area of each circle:

MA_775_DIABLO [31]

Answer:

a] Radius of circle = 10 feet

Circumference of circle = 94.2 feet (Approx.)

Area of circle = 314 feet² (Approx.)

b] Radius of circle = 6 cm

Circumference of circle = 37.68 cm (Approx.)

Area of circle = 113.04 cm² (Approx.)

Step-by-step explanation:

Given:

a] Radius of circle = 10 feet

b] Radius of circle = 6 cm

Find:

Circumference an area for both circle

Computation:

Circumference of circle = 2πr

Area of circle = πr²

a] Radius of circle = 10 feet

Circumference of circle = 2(3.14)(10)

Circumference of circle = 94.2 feet (Approx.)

Area of circle = (3.14)(10)²

Area of circle = 314 feet² (Approx.)

b] Radius of circle = 6 cm

Circumference of circle = 2(3.14)(6)

Circumference of circle = 37.68 cm (Approx.)

Area of circle = (3.14)(6)²

Area of circle = 113.04 cm² (Approx.)

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3 years ago

B over 7 plus 1 equals 6

charle [14.2K]

X=35 because fort you multiply both sides by 7 the you move you move the constant to the right

8 0

3 years ago

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