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3 years ago

Please help me!! I'm not good at math ✌

Mathematics

1 answer:

Bezzdna [24]3 years ago

6 0

I believe these are the answers.
A
i) (y=5) x=6
ii) (y = -1) x=0
iii) (y = -2) x = -1
B
i) (x = -4) y = -5
ii) (x=2) y=1
iii) (x=5) y=4
Sorry if these are wrong but I hope the help.

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Steve is 5 times as old as Janis. In 12 years, he will be twice as old as she will be then. How old are they now?

Alex17521 [72]

Write this story as equations:

s = 5j
(s+12) = 2*(j+12)

Then solve:

5j+12 = 2j + 24 => 3j = 12 => j=4, s=5*4=20

Steve is 20, Janis is 4
In 12 years they will be 32 and 16

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4 years ago

Given that . In the space below, type a function that would shift f(x) right 2.5 units, down 7 units, vertically shrink the func

Mkey [24]

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h = determines if a point should move up or down (y-axis)

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y = - |x - 2.5|-7

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4 years ago

The area of a flower bed is 24 square feet. If the other sides were whole number demensions, how many lengths and widths are pos

goldenfox [79]

Answer:

The possible combinations are (4 & 6) ,(8 &3), (2 &12), (24 &1)

Step-by-step explanation:

The area of a flower bed is 24 square feet.

Now, the factors of 24 are 2 x 2 x 2 x 3.

Hence, if the other sides were whole number dimensions, then the possible combinations will be (4 & 6) ,(8 &3), (2 &12), (24 &1)

3 0

4 years ago

Which of the following is the solution to the inequality below?

irakobra [83]

Answer:1/3

Step-by-step explanation:

Rearrange the equation by subtracting what is to the right of the greater than sign from both sides of the inequality :

3/2*(x-1/3)-(-5*x)>0

Step by step solution :

STEP

Simplify —

Equation at the end of step

3 1

(— • (x - —)) - -5x > 0

2 3

STEP

Rewriting the whole as an Equivalent Fraction

2.1 Subtracting a fraction from a whole

Rewrite the whole as a fraction using 3 as the denominator :

x x • 3

x = — = —————

1 3

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Adding fractions that have a common denominator :

2.2 Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

x • 3 - (1) 3x - 1

——————————— = ——————

3 3

Equation at the end of step

3 (3x - 1)

(— • ————————) - -5x > 0

2 3

STEP

Simplify —

Equation at the end of step

3 (3x - 1)

(— • ————————) - -5x > 0

2 3

STEP

Equation at the end of step

(3x - 1)

———————— - -5x > 0

STEP

Rewriting the whole as an Equivalent Fraction :

5.1 Subtracting a whole from a fraction

Rewrite the whole as a fraction using 2 as the denominator :

-5x -5x • 2

-5x = ——— = ———————

1 2

Adding fractions that have a common denominator :

5.2 Adding up the two equivalent fractions

(3x-1) - (-5x • 2) 13x - 1

—————————————————— = ———————

2 2

The equation at the end of step

13x - 1

——————— > 0

STEP

6.1 Multiply both sides by 2

6.2 Divide both sides by 13

x-(1/13) > 0

Solve Basic Inequality :

6.3 Add 1/13 to both sides

x > 1/13

7 0

3 years ago

PLZ SHOW YOUR WORK!!

cestrela7 [59]

Tony walks 116.7 m diagonally across the lot.

Solution:

Length of the rectangle = 80 m

Width of the rectangle = 85 m

<u>To find the diagonal of the rectangle:</u>

Diagonal of the rectangle = $\sqrt{l^2+w^2}$

$=\sqrt{80^2+85^2}$

$=\sqrt{6400+7225}$

$=\sqrt{13625}$

$=5\sqrt{545}$

Diagonal of the rectangle = 116.7 m

Hence Tony walks 116.7 m diagonally across the lot.

8 0

3 years ago