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Nataly [62]
3 years ago
13

-4 (-3 + 5 + (-2)) show all steps

Mathematics
2 answers:
CaHeK987 [17]3 years ago
6 0

Answer:

= 0

Step-by-step explanation:

-4(-3 + 5 +(-2 ))

get rid of the "( )"

-4 (- 3 + 5 - 2)

calculate the sum

-4 x 0

anything times 0 = 0 so the answer is;

0

Marina CMI [18]3 years ago
3 0

Answer:

0

Step-by-step explanation:

-4(-3 + 5 + (-2))

-4(-3 + 5 -2)

-4 • 0

0

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Susie is having a party with 15 guests. she wants to feed everyong sandwhiches.if susie buys 7 1/2 pounds of meat, how much meat
padilas [110]
Take 7.5 and divide by 15.
7.5/15=.5
each guest will get .50 pound of meat.
4 0
3 years ago
What is the axis of symmetry gor Graph A​
Lady_Fox [76]

Answer:

X=-2

Step-by-step explanation:

The axis of symmetry for any parabola is the x value of the vertex. Dividing the parabola along the vertex will always yield two symmetric halves.

7 0
3 years ago
Simplify 4 n5 + 3.5 n5 + (-2.1 n5 ).
Alona [7]

Step-by-step explanation:    

<u>Step 1: Let's simplify step-by-step.</u>

4n^5 + 3.5n^5 - 2.1n^5

= 4n^5 + 3.5n^5 +  -2.1n^5

<u>Step 2: Combine Like Terms:</u>

= 4n^5 + 3.5n^5 + -2.1n^5

= (4n^5 + 3.5n^5 + -2.1n^5)

= 5.4n^5

 

Answer:    

=5.4n^5

 

Hope this helps.

7 0
2 years ago
A gas station sells two grades of gasoline: regular and super. These are priced at $2.00 and $3.00 per gallon, respectively. Let
djyliett [7]

Answer:

(a) E(Y) = 4400

sd (Y) =225

(b)  P(Y ≤ 4500) = 0.67003

(c) P (X₁ > X₂) = 0.31744

Step-by-step explanation:

(a) Here we have

Y = 2·X₁ + 3·X₂

Therefore E(Y) = 2·E(X₁) + 3·E(X₂) = 2000 + 2400 = 4400

sd(Y) is given by

Variance Y = (sd (Y))² = 2²·(sd (X₁))² + 3²·(sd (X₂))²

= 4·8100 + 9·2025 =  50625

sd (Y) = √50625 = 225

(b) The probability that the revenue does not exceed 4500 is given by

P(Y ≤ 4500) =  P(z ≤0.444)

z = \frac{\overline{\rm x} - \mu} {\sigma /\sqrt{n} }

z = \frac{4500 - 4400} {225 /\sqrt{1} } = 0.444

Therefore from the normal distribution table, we have

P = 0.67003

(c) The probability that the P(X₁ > X₂)

Since the gas station sells 2 portions of X₁ to 3 portions of X₂

Therefore, the probability that the gas station sells more of X₁ is given by

₅C₀ × 2/5⁰×3/5⁵ = 0.07776

₅C₁ × 2/5¹×3/5⁴=  0.2592

₅C₂ × 2/5²×3/5³ = 0.3456

P (X₁ > X₂) = 1 - 0.68256 = 0.31744

6 0
3 years ago
Read 2 more answers
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Answer:

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