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2 years ago

2. The bring walks 2km to school and John walk 800m.

Mathematics

1 answer:

Firdavs [7]2 years ago

3 0

Step-by-step explanation:

km to m

1 km = 1000 m

2km = 2000 m

2000 : 800

20:80

answer: 1:4

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A package delivery company experiences high variability in daily customer demand, which in turn results in high variability in t

Ilya [14]

Solution :

Let :

X = number of overtime hours

S = total weekly salary

S = $12 \times 40 + 18 \times X$

S = 480 + 18X

E(S) = $480 + 18 \times E(X)$

$E(S) = 480 + 18 \times 15$

= 750

Mean of S = 750

Var (S) = $18^2 \times Var(X)$

Var(S) = $18^2 \times 4^2$

= 5184

Variance of S = 5184

The standard deviation equals square root of 5184 = 72

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3 years ago

Factor and solves the polynomial <br> x(to the 2nd power) + 5x + 4 = 0<br> x= (blank) and x= (blank)

zubka84 [21]

Answer:

$x = -4~ \text{and}~ x = -1$

Step-by-step explanation:

$~~~~~~~x^2 +5x +4 =0\\\\\implies x^2 +4x +x +4 = 0\\\\\implies x(x+4) +(x+4) = 0\\\\\implies (x+4)(x+1) = 0\\\\\implies x = -4,~~ x = -1$

3 0

1 year ago

Can someone please help me with this question

Liono4ka [1.6K]

Answer:

m = 9

Step-by-step explanation:

1) Find scale factor

12/8 = 3/2 = 1.5

2) 6x1.5 = 9

1) Set up proportion -> 6/8 = m/12

2) Cross multiply -> 8m = 72

3) Divide both sides by 8

4) m = 9

7 0

2 years ago

20% of what number is 90?

ehidna [41]

90 = (20)(x)
so you have to solve for x
90/.20 =450
answer is 450

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3 years ago

What is the sum of 134,874+73,940

guajiro [1.7K]

Answer:

208,814

Step-by-step explanation:

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3 years ago

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