All categories

1 year ago

HELP ASAP NEED THE ANSWER LIKE RIGHT NOW 100 POINTS AND WILL GIVE BRAINLIEST

Mathematics

2 answers:

Cloud [144]1 year ago

6 0

Answer:

a + c = 30

8a + c = 100

a=10, c= 20

Step-by-step explanation:

cost = 8a + 1c since it is 8 dollars for adult and 1 for child where a is the number of adults and c is the number of children

a+c = 30 since we know that 30 adults and children went

100 = 8a + 1c and it cost 100 dollars

Let c =30 -a

100 = 8a + (30-a)

100 = 7a +30

Subtract 30 from each side

70 = 7a

Divide by 7

10 =a

Then a+c = 30

10+c = 30

c = 30-10

c = 20

Serhud [2]1 year ago

4 0

Answer:

eqn1 : a +c=30

eqn2: 8a+c=100

20 children and 10 adults

You might be interested in

Help me plz 50 points and ill give brainliest if you answer all

Masteriza [31]

Answer:

11) $2x=-4$

Divide both sides by 2:

$\frac{2x}{2}=\frac{-4}{2}$

$x=-2$

12) $2^3\cdot \:2^1=2^{3+1}=2^4$

( $2^4=16)$ if you wanted the exact value.

13) $-3+10=x$

Switch sides:

$x=-3+10$

Rearrange:

$x=10-3$

$x=7$

14) $10^2-64$

$10*10-64$

$100-64$

$36$

15) $\sqrt{100}-5^2$

$10-5^2$

$10-5*5$

$10-25$

$-15$

16) $\frac{1}{4}x=-10$

Multiply both sides by 4:

$4\cdot \frac{1}{4}x=4\left(-10\right)$

$x=-40$

17) $\left(2^3\right)^2=2^{3*2}=2^6$

$(2^6=64)$ if you wanted the exact value.

18) $\left(2^3\right)\left(2^2\right)=2^{3+2}=2^5$

$(2^5=32)$ if you wanted the exact value.

Bonus Question:

Terrorist attacks took place against the United States in September 11 2001.

This is named "September 11 attacks" and you can search more about it online.

7 0

2 years ago

Read 2 more answers

Solve: 6(1-3x) +2(2x-3)=0

Radda [10]

Answer:

x = 0

Step-by-step explanation:

→ Expand out the brackets

6 - 18x + 4x - 6 = 0

→ Collect all the like terms

-12x = 0

→ Now solve

x = 0

7 0

1 year ago

Read 2 more answers

Which of the following is ordered from least to greatest?

zubka84 [21]

The fourth one should be the correct answer

5 0

2 years ago

Read 2 more answers

Calculate the distance between the points C = (0,-2) and L= (-4, 1) in the coordinate plane. Give an exact answer. (not a decima

schepotkina [342]

Answer: 5

Step-by-step explanation:

$\sqrt{(-4-0)^2 + (1-(-2))^2}=5$

7 0

1 year ago

Consider an assembly line with 20 stations. Each station has a 0.5% probability of making a defect. At the end of the line, an i

vova2212 [387]

The answer is 0.4%. The probability that a unit end in a rework can be calculated using the following equation:

P(rework)= P(defects found) * P(defect)
= .8 * .005
= .004
= 0.4%

Thank you for posting your question. Feel free to ask me more.

6 0

2 years ago