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4 years ago

What are the values of a and b? (Image attached) double point and brainliest to first correct answer!:) ASAP please help

Mathematics

1 answer:

exis [7]4 years ago

4 0

Answer:7.5 = b and 4.5 = a i think these are really annoying questions lol

Step-by-step explanation:

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Brian wants to build a ramp that leads to a storeroom 5 meters above the ground. He wants the ramp to be 10 meters long. What sh

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You should have an angle of elevation of 30 degrees.

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4 years ago

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Angles A = 60, B = 2x, C = 3x and D = 25 are 4 angles on a straight, what 3 points is the value of angle B?*

iragen [17]

Answer:

B = 38°

Step-by-step explanation:

A straight angle is 180°. If your four angles total a straight angle, then ...

60 +2x +3x +25 = 180

95 = 5x . . . . . . subtract 85

x = 19 . . . . . . divide by 5

2x = 38 . . . . . angle B is 38°

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2 years ago

A salesperson earns $200 a week plus a 4% commission on her sales. Which equation models the relationship between her sales in a

trasher [3.6K]

In this problem, we have the following variables:

e: The weekly earnings of a salesperson

s: sales in a given week

A salesperson earns $200 a week plus a 4% commission on her sales, that is, she earns:

<em>$200 plus 0.04 of her sales in a given week</em>

In a mathematical model, this is given by:

e = 200 + 0.04s

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3 years ago

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The table shows the amounts of two ingredients Tara used to make a snack mix. She ate 5/8 cup of the snack mix for lunch. How mu

mafiozo [28]

5/8 are eaten

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3 years ago

What is the other square root of 119 + 120i?

MakcuM [25]

Answer:

$\sqrt{119+120 i}=\pm (12.24+i 4.90)$

Step-by-step explanation:

Given

z = 119 + 120 i

Let $\sqrt{119+120 i}=p+iq$

Squaring both sides

$119+120 i=p^2-q^2+2ipq$

Comparing real and imaginary part

Re(LHS)=Re(RHS)

$119=p^2-q^2$ ...........................(1)

comparing Im(LHS)=Im(RHS)

120=2pq

$q=\frac{60}{p}$

Substitute q in 1

$119=p^2-(\frac{60}{p})^2$

$p^4-119p^2-(68)^2=0$

Let $x=p^2$

$x^2-119x-4624=0$

$x=\dfrac{119\pm \sqrt{119^2+4\times 4624}}{2}$

$x=\frac{119\pm 180.71}{2}$

we take only Positive value because $p^2=x$

x=149.85

$p^2=149.85$

thus $p=\pm 12.24$

$q=\pm 4.90$

thus,

$\sqrt{119+120 i}=\pm (12.24+i 4.90)$

8 0

3 years ago