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3 years ago

CALLING ALL MATHS GENIUSES

Mathematics

2 answers:

erastova [34]3 years ago

7 0

Area is length times width
(X+9)(X-1)
X^2+8x-9

s2008m [1.1K]3 years ago

3 0

Got you. So we will use the basic formula for the area of a rectangle and insert variable values. (^_^)

Area= Width(Height) ----------- Insert values of width and height [width = (x-1)
, height = (x+9)]

Area= (x-1)(x+9) ) -------------- Then expand if needed?
= x² +8x -9

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4 years ago

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Basile [38]

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3 years ago

Read 2 more answers

Y’all know this anything about this?

Andre45 [30]

We are given:

Parallelogram CDEF
∠C = 13x - 10
∠D = 5x + 10

To Find: ∠E

Concept Used:

Adjacent angles of a Parallelogram are Supplementary

Finding the value of 'x':

Since adjacent angles of a parallelogram are Supplementary:

∠D + ∠C = 180

5x + 10 + 13x - 10 = 180 [replacing the values of angle C and D]

18x = 180

x = 10 [dividing both sides by 18]

__________________________________________________________

Finding Measure of Angle D:

We are given that:

∠D = 5x + 10

∠D = 5(10) + 10 [since x = 10]

∠D = 60°

__________________________________________________________

Finding the measure of ∠E:

∠D and ∠E are Adjacent angles

Since Adjacent angles are Supplementary:

∠D + ∠E = 180

60 + ∠E = 180

∠E = 120° [subtracting 60 from both sides]

Hence, the measure of ∠E = 120°

7 0

3 years ago

What's the solution for y+1/2=3/4

creativ13 [48]

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

2(y+1) = 3 LCD is 4

2*y + 2*1 = 3

2y + 2 = 3

2y = 3 - 2

2y = 1

y = 1 / 2

6 0

3 years ago

The height of Atlas V rocket used for space lifts was 205 feet. What is the height of a model of Atlas V rocket if the scale fac

KengaRu [80]

Answer: 6.4 feet

Step-by-step explanation:

Height of Atlas V rocket = 205 feet

Ratio of the model = 1:32 = 1/32

Model / Real = 1/32

Since Real height = 205, we put it into the equation and this will be:

Model / Real = 1/32

Model / 205 = 1/32

Model × 32 = 205 × 1

Model = 205/32

Model = 6.4 feet

The height of the model is 6.4 feet.

7 0

3 years ago