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1 year ago

Please help!!!!!!!!!!!!!

Mathematics

2 answers:

Sergio039 [100]1 year ago

6 0

Answer:

It's a

Step-by-step explanation:

first I did 15/100 = x/59.99.

Then I multiplied 59.99 and 15 to get 899.85

After that I divided it by 100 to get 8.9985

That is how much money you get off from the 15 percent. So you subtract 8.9985 by 59.99 to get 50.9915.

Now it wants 50% of 50.9915

The fractions are 50/100 and x/50.9915

Now I multiply 50 and 50.9915 to get 2549.575

Then I divide 2549.575 by 100 to get 25.49575

Then I subtract 50.9915 by 25.49575 to get 25.49575

That isn't a real math number for money. So you round to the nearest 10th. The 5 makes the 9 turn into a 10 making it 25.50.

The total cost is 25.50$

I hope this helps! - Karen

Neko [114]1 year ago

4 0

I think it might be C

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I need some help with this

masya89 [10]

Answer:

A, C, D

Step-by-step explanation:

Consider triangles NKL and NML. These triangles are right triangles, because

$m\angle K=m\angle M=90^{\circ}$

In these right triangles:

$\overline{NL}\cong \overline {NL}$ - reflexive property;
$\angle KLN\cong \angle MLN$ - given

Thus, triangles NKL and NML by HA postulate. Congruent triangles have congruent corresponding parts, so

$\overline{KN}\cong \overline{NM}\\ \\\overline{KL}\cong \overline{LM}\ [\text{option D is true}]$

Since

$\overline{KN}\cong \overline{NM},$

then

$7x-4=5x+12\\ \\7x-5x=12+4\\ \\2x=16\\ \\x=8\ [\text{option A is true}]\\ \\MN=KN=7\cdot 8-4=56-4=52\ [\text{option C is true}]$

Option B is false, because KN=52 units.

Option E is false, because LN is congruent KN, not LM

4 0

2 years ago

For each of the equations below, solve for y in terms of x. ! a. 2x – 3y = 12

ira [324]

Answer:

$\large\boxed{y=\dfrac{2}{3}x-4}$

Step-by-step explanation:

$2x-3y=12\qquad\text{subtract}\ 2x\ \text{from both sides}\\\\2x-2x-3y=12-2x\\\\-3y=12-2x\qquad\text{divide both sides by (-3)}\\\\\dfrac{-3y}{-3}=\dfrac{12}{-3}+\dfrac{-2x}{-3}\\\\y=-4+\dfrac{2}{3}x$

7 0

2 years ago

Simplify the expression 18x^2/3x^6 .

sammy [17]

Answer:

6/x^4

Step-by-step explanation:

7 0

2 years ago

PLS HELP. DUE IN A FEW MIN!!!!!!!!! ILL GIVE BRAINLY CROWN THInGY.

choli [55]

Part A:it would be 32 dollars because 60 and 30 percent off is 42 dollars subtract 10 is 32

part b: yes it would be different the new total would be 35 because if you subtract 10 first it would be 50 then 30 percent off is 35

3 0

2 years ago

Read 2 more answers

If lisa can run a mile in 7 minutes. At that rate of speed, how long would it take her to run 2 kilometers?

murzikaleks [220]

Answer:

8.75

Step-by-step explanation:

1 mile = 1.6 km

So, every 7 minutes, 1.6 km is ran.

Divide 1.6 by 2 to figure out how much more she is running.

1.6 / 2 = 0.8

Divide the known pace by the extra distance to figure out the time

7 min / 0.8 km = 8.75 min

5 0

2 years ago