Directions: Solve each system of equations by substitution. Check your solutions.

1. y=2x
x+y=6

2. 5x+10y=3
x=-1/2y

3. y-x=3x+2
2x+2y=14-y

ty in advance, I need it for 10 minutes if 10 mins pass, it's okay I'll wait.​

5 x n = -95

Divide both sides by 5:

N = -95/5

N = -19

The answer is -19

Answer:

Step-by-step explanation:

A) $51.5

B) two children tickets

Step-by-step explanation:

Given that the cost of admission for the Flemington Aquarium is $11.50 for each senior citizen, $14.75 for each adult and $7.25 for each child.

The cost of admission for the family of 3 adults and 1 child will be

(3 × 14.75) + (1 × 7.25)

44.25 + 7.25 = 51.5 dollars

What if two more tickets for admission are purchased for a total of $14.50?

Since there is no ticket of that amount, we can determine what type of tickets the family purchases by taking the amount of child tickets away from the amount. That is

14.5 - 7.25 = 7.25

The remaining money amount to child ticket again. We can therefore conclude that the two more tickets for admission purchased for a total of $14.50 are for 2 children tickets

hope this helped<3!!

Answer:

y = - [tex]\frac{9}{5}[/tex] x - 7

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Given

9x + 35 = - 5y ( add 5y to both sides )

5y + 9x + 35 = 0 ( subtract 9x + 35 from both sides )

5y = - 9x - 35 ( divide all terms by 5 )

y = - [tex]\frac{9}{5}[/tex] x - 7 ← in slope- intercept form

Step-by-step explanation:

they expect originally to put 12 songs on the CD.

are you sure about the 2% ? is that not 20% ? or better 25%.

because

100% = 12

1% = 100%/100 = 12/100 = 0.12

2% = 1%×2 = 0.12×2 = 0.24

"0.24 songs more" does not really make any sense.

20% would then be 2.4 songs, which would mean 2 songs, but 2 would be only 2/0.12=16.7%.

but 25% would be 0.12×25 = 3. so, 3 songs more.

and that makes sense.

so, they produced 25% or 3 songs more than they expected to put on the CD. that is 12+3=15 songs.

now, we have a new 100% :

100% = 15

1% = 15/100 = 0.15

40% = 0.15×40 = 6

so, 6 songs are removed.

that leaves 9 songs on the CD.

Two quadrilaterals are congruent when their corresponding sides and angles are equal.

The corresponding sides and angles are;

39. ∠A corresponds to ∠E

40. [tex]\overline{EF}[/tex] corresponds to [tex]\overline{AB}[/tex]

41. [tex]\overline{BC}[/tex] corresponds to [tex]\overline{FG}[/tex]

Reasons:

The known relationship between the quadrilaterals are;

ABCD = EFGH

Therefore, we have that the corresponding sides are;

[tex]\mathbf{\overline{AB}}[/tex] corresponds to [tex]\mathbf{\overline{EF}}[/tex]

[tex]\mathbf{\overline{BC}}[/tex] corresponds to [tex]\mathbf{\overline{FG}}[/tex]

[tex]\mathbf{\overline{CD}}[/tex] corresponds to [tex]\mathbf{\overline{GH}}[/tex]

[tex]\mathbf{\overline{DA}}[/tex] corresponds to [tex]\mathbf{\overline{HE}}[/tex]

The corresponding angles are;

∠A corresponds to ∠E

∠B corresponds to ∠F

∠C corresponds to ∠G

∠D corresponds to ∠H

The sides and angle that corresponds to each part are;

Learn more here:

https://brainly.com/question/11590323

Answer:

i think its 16/34

Step-by-step explanation:

Answer: ?????

Step-by-step explanation: Is it doable? 23 - 4 = 19

Answer:

610 virus cells

Step-by-step explanation:

let 10,000,000 be y And 12hrs be z and the cells left at the end of the week be x

I.e

[tex]x = y { \binom {1} {2}} ^{ \binom{t}{tx} } [/tex]

where tx is how long it takes for 1/2 of it to decay and t is the number of hours it's supposed to decay

So

[tex]x \: = \: 10000000 \: \times {{\frac{1}{2}}} ^{ \frac{24 \times 7}{12} } [/tex]

t is 7 weeks × 24 to convert to hours

so, therefore, 24 × 7 ÷ 12 is 14 [tex]x = 10000000 \times \frac{1}{ {2}^{14} } [/tex]

so 10,000,000 ÷ 2^14

10,000,000 ÷ 16,348 = 610.4

therefore there are approximately 610 viruses left after one week

Answer:

3:10 bcs 6:20 simplify by 2

Answer:

Edward earned $720 in interest.

Step-by-step explanation:

3% of 6000 is 180

0.03*6000 is 180

180*4=720

$720

Answer: interest = 720

Step-by-step explanation:

3/100 x 6,000/1 = 180/1 = 180

since it's 4 years

180 x 4 = 720

Percentage is roughly always out of a 100

Answer:

3 is the answer to this question.

Step-by-step explanation:

Answer:

insurance payments every month

Answer:

The answer is D: Insurance

Step-by-step explanation:

Answer:

She pays $31.50

7.25 x p    OR (7.25 x p) - 4.75 if coupon included

Step-by-step explanation:

7.25 x 5 = 36.25

36.25 - 4.75 = 31.50

Answer:

$30

Step-by-step explanation:

Answer:

A) y = 3x + 2 y = -2x + 5

Step-by-step explanation:

We can rule out options B and D right away, because one of the lines' y-intercept is positive 2 not negative.

(Remember that y-intercept is the b in y=mx+b).

So at this point we know the answer is either A or C.

We can also rule out C though, because the second line's y-intercept is positive 5, while the second line in option C is negative.

You can also use the slope of each line to double check.

Hope this helps :)

Also please mark me brainliest, I'm almost there to the next rank.

Answer:

18/10 or 1 4/5

Step-by-step explanation:

32/10 - 7/5

Remember that in order to subtract fractions, you always need to have the same denominator.

The denominator of 32/10 is 10.

The denominator of 7/5 is 5.

Are the denominator the same? In other words, are 10 and 5 equal? No, so now we need to make the denominator the same so that they are equal. To do that, find the LCM of 10 and 5.

List the LCM:

10: 10, 20, 30

5: 5, 10, 15, 20

Do you see any numbers in the list of the two numbers that are the same? Yes, 10 and 20. But since we are finding the LCM (Least common multiple), we need to use the smallest common multiple, which is 10.

Now that we found the LCM, make the denominator of 7/5 the same as 32/10.

To do that, just multiply the numerator and the denominator of 7/5 by 2; 7 times 2 is 14, 5 times 2 is 10. The final fraction should be 14/10.

Do 14/10 and 32/10 have the same denominator now? Yes, right?

Now, it’s the simple part. We now have the expression, 32/10 - 14/10.

Just subtract across, but keep the 10 as the denominato. 32 - 14 is 18. Keep the denominator 10, and you get 18/10 as your answer.

Therefore, 18/10 or 1 4/5 (if turned into a mixed fraction and simplified) is the answer. Hope this helps!

Answer: y = (-11/2)x -52

Aka y=mx*b

Step-by-step explanation:

[tex](\stackrel{x_1}{-10}~,~\stackrel{y_1}{3})\qquad(\stackrel{x_2}{-8}~,~\stackrel{y_2}{-8})\\\\\\% slope = m\stackrel{slope}{m}\implies\cfrac{\stackrel{rise}{\stackrel{y_2}{-8}-\stackrel{y1}{3}}}{\underset{run}{\underset{x_2}{-8}-\underset{x_1}{(-10)}}}\implies \cfrac{-11}{-8+10}\implies \cfrac{-11}{2}[/tex]

[tex]\begin{array}{|c|ll}\cline{1-1}\textit{point-slope form}\\\cline{1-1}\\y-y_1=m(x-x_1)\\\\\cline{1-1}\end{array}\implies y-\stackrel{y_1}{3}=\stackrel{m}{-\cfrac{11}{2}}[x-\stackrel{x_1}{(-10)}]\\\\\\ y-3=-\cfrac{11}{2}(x+10)\implies y-3=-\cfrac{11}{2}x-55\implies y = -\cfrac{11}{2}x-52[/tex]

Answer:

The base is 24 cm

Step-by-step explanation:

There are three ways to look at this problem:

12 + 12 + 24 + 24 = 72

or

2(12+b) = 72

b = 24

or

24 · 12 = 72

I hope this helps!

Step-by-step explanation:

PYTHAGORAS THEOREM

[tex] {c}^{2} - {b}^{2} = {a}^{2} \\ {7}^{2} - {5}^{2} = {x}^{2} \\ 49 - 25 = 24 \\ \sqrt{24} = 4.89897948557[/tex]

Answer:

heather bought 37 yards of ribbon

Step-by-step explanation:

25-22.04=2.96

2.96/0.08=296/8

296/8=37

Answer:

Step-by-step explanation:

$25 - $22.04 = $2.96

$2.96 / 8 cents = (Not sure how American currency works, so you'll have to do the calculation yourself, my apologies)

The answer to that is your answer

Answer:

35.09 pounds

Step-by-step explanation:

280.72/8 = 35.09

Answer:

The answer is 38 euros.

Step-by-step explanation:

Answer:

100

Step-by-step explanation:

100  liters to kilometers i think hope this helps

Answer:

15.................

Step-by-step explanation:

please Mark my answer in brainlist

Answer:

5 × 7

Step-by-step explanation:

To divide by a fraction, multiply by its reciprocal.

To divide by the fraction 1/7, multiply by the reciprocal of 1/7 which is 7.

5 ÷ 1/7 = 5 × 7

bitwduQUEd

Step-by-step explanation:

Answer:

707

Step-by-step explanation:

Using the principle of probability, the probability that the outcome of both spins does not land on "bankrupt" is 1/144

Given the Parameters :

Recall :

First spin :

Second spin :

P(neither lands on bankrupt) = 1/12 × 1/12 = 1/144

Therefore, the probability that neither lands on bankrupt is 1/144

Learn more : https://brainly.com/question/18405415

Answer:

.84

Step-by-step explanation:

got it right on kahn