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3 years ago

What is the value of a2 - b when a = 5 and b = -2 ?

Mathematics

2 answers:

Nuetrik [128]3 years ago

7 0

Answer:

Step-by-step explanation:

When we plug our numbers into this expression, it reads:

5*2-(-2)

This is also the same as 5*2+2

So, 5 times 2 is 10 plus 2 equals 12.

alexandr1967 [171]3 years ago

7 0

The answer is 12

Step-by-step explanation:

5*2-(-2)

This is also the same as 5*2+2

So, 5 times 2 is 10 plus 2 equals 12.

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The map of a walking trail is drawn a coordinate grid with three points of interest. The trail starts at R(-3,2) and goes to S(2

Nezavi [6.7K]

Answer:

12 units

Step-by-step explanation:

Given that :

R(-3,2)

S(2,2)

T(2,-5).

The total length ;

Distance between two points : √[(x2 - x1)² + (y2 - y1)²]

Distance between R and S :

R = (-3,2)

S(2,2)

√[((2 - (-3))^2 + (2 - 2)^2]

Sqrt(5^2 + 0^2)

D1 = 5 units

Distance between S and T:

S(2,2)

T(2,-5).

D2 = √[(2 - 2)^2 + (-5 - 2)^2]

D2 = sqrt(0^2 + (-7)^2)

D2 = 7 units

Hence, total length = D1 + D2 = (5 + 7) = 12 units

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2 years ago

if you can travel 156 miles on 4 gallons of gasoline how many miles can you travel on 6 gallons of gas

Luden [163]

Its 234!!!!!!!!!!!!!! Just checked my work

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3 years ago

Read 2 more answers

How many feet long is the shadow of a 15-foot flagpole if a 5-foot woman standing at the base of the flagpole has a shadow that

Vikentia [17]

The height of flagpole is 12.5 feet.

Step-by-step explanation:

Given,

Height of woman = 5 foot

Shadow of woman = 6 feet

Ratio of height to shadow = 5:6

Shadow of flagpole = 15 foot

Height of flagpole = x

Ratio of height to shadow = x:15

Using proportion;

Ratio of height to shadow :: Ratio of height to shadow

$5:6::x:15\\$

Product of mean = Product of extreme

$6*x=15*5\\6x=75$

Dividing both sides by 6

$\frac{6x}{6}=\frac{75}{6}\\x=12.5$

The height of flagpole is 12.5 feet.

Keywords: ratio, proportion

Learn more about proportion at:

#LearnwithBrainly

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3 years ago

What is the best next step in the construction of the perpendicular bisector <br> AB?

qaws [65]

“A” is the answer i believe !

hope this helps

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3 years ago

Which set of transformations have been performed on triangle ABC to form triangle A′B′C′? (1 point)

Murrr4er [49]

Answer:

The answer is dilation by a scale factor of 2 followed by reflection about the y- axis.

Step-by-step explanation:

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3 years ago