3 years ago

40% of what number is 82

Mathematics

1 answer:

dezoksy [38]3 years ago

6 0

It is 32.8 I just did %in my class today

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For what values of x is 12x-6 < 13x + 10

slamgirl [31]

Answer:

x > 16

Step-by-step explanation:

If you have any questions about the way I solved it, don't hesitate to ask

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3 years ago

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3 years ago

Find the area of circle o if DCBO is a rectangle and DB measure 10 units

Dmitrij [34]

Answer:

$100\pi$

Step-by-step explanation:

Step 1: Identity the radius.

Since O is the center of the circle, and C and E lie on the circumference, OC and OE are the radii of the circle and thus,

OC=OE.

Step 2: Consider the rectangle.

All diagonals in a rectangle are congruent so this means

DB= OC ( OC is also a diagonal).

Thus, OC= 10 units.

Step 3: Analyze

So this means OE is also 10 units as well.

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$\pi {r}^{2}$

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2 years ago

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$690 is invested in an account earning 7% interest (APR),

sp2606 [1]

Answer:

567 is the answer because of the 7percent

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2 years ago

Sam is trying to determine which cell phone and service plan to buy for his mother. The first phone costs $100 and $55 per month

vodomira [7]

Answer:

13 months

Step-by-step explanation:

x is the number of months

first phone:

f(x) = 55x + 100

second phone:

g(x) = 51x + 150

now set up the inequality

g(x)<f(x)

51x + 150 < 55x + 100

Solve the inequality:

51x + 150 < 55x + 100

(get everything on the correct sides... combine the like terms)

51x - 55x < 100 - 150

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divide both sides by -4 (don't forget to flip the inequality sign when dividing by a negative number.)

x > 50/4

x > 12.5

round up to 13

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2 years ago

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