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4 years ago

Help pleaseee !! Equation work

Mathematics

1 answer:

Lina20 [59]4 years ago

4 0

-11.2 + 4(2.1 + q) = -0.8

-11.2 + 8.4 + 4q = -0.8

4q = -0.8 + 11.2 - 8.4

4q = 2

q = 1/2 Answer

3x = -9

x = -9 / 3

x = -3 Answer

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Mind my work,but help me

dangina [55]

A circle has full round angle of 360 degrees. A circle represents all survey participants. We need to find the total number of survey participants.
total = 174 + 122 + 55 + 19 + 130
total = 500

Then determine the measure of angle represents people selected football using information above.
football = $\dfrac{\text{participants selected football}}{\text{total participants}} \times 360^{0}$
football = $\dfrac{122}{500} \times 360^{0}$
football = $\dfrac{122 \times 360^{0} }{500}$
football = $\left(\dfrac{43,920}{500}\right)^{0}$
football = 87.84⁰
to the nearest whole number
football = 88⁰

The measure of angle represents people selected football is 88⁰ (b)

6 0

4 years ago

Factor this polynomial expression x^2 - 36

Diano4ka-milaya [45]

Answer:

C) (x+6)(x-6)

Step-by-step explanation:

Because (x+6)(x-6)=x^2+6x-6x-36=x^2-36.

4 0

3 years ago

Which equation can be used to solve for b? Triangle A B C is shown. Angle B C A is a right angle and angle C A B is 30 degrees.

FinnZ [79.3K]

Answer: We should use the correct formula for tan α (which is opposite

leg over adjacent leg) tan α = 5/b

Step-by-step explanation:

See attached file

We must use the for equation of tan α = BC/AC

tan α = BC/ b tan α = 5/b tan 30⁰ = 1/√3

b = 5/√3 ⇒ b = 5/1.7320

b = 2.8868 cm

4 0

3 years ago

Read 2 more answers

Solve the equation and enter the value of x below.<br> x-12 = 8<br> X =

san4es73 [151]

The answer would be X = 20

7 0

3 years ago

Read 2 more answers

Please please please help i can't do this anymore

anastassius [24]

Answer:

Photo.

Step-by-step explanation:

A: The graph of the system is all points in the graph that suit 4x-2<y</=-5/2x-2

B: The point (-2,-2) is not included in the solution area. While it suits the second equation, it doesn't suit the first, ruling it out as a possible solution. If you plug in -2 as both y and x in the equation 4x-2>y, you'll get -8>-2, which is false. So, it is not a solution.

6 0

3 years ago