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3 years ago

if there are 48 students in a class and 42% of those students have a dog what percent of students have a dog or a cat?

Mathematics

1 answer:

LenaWriter [7]3 years ago

5 0

I believe 24 percent

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Which ordered pair is a solution to the system of linear equations Y= -7x+2 and y=9x-1

evablogger [386]

$\left\{\begin{array}{ccc}y=-7x+2\\y=9x-1\end{array}\right\Rightarrow 9x-1=-7x+2\\\\9x-1=-7x+2\ \ \ |+1\\9x=-7x+3\ \ \ |+7x\\16x=3\ \ \ \ |:16\\x=\dfrac{3}{16}\\\\\text{substitute the value of x to the second equation}\\\\y=9\cdot\dfrac{3}{16}-1\\\\y=\dfrac{27}{16}-\dfrac{16}{16}\\\\y=\dfrac{11}{16}\\\\\text{The solution is}\ \left(\dfrac{3}{16};\ \dfrac{11}{16}\right)$

3 0

3 years ago

Please help I will mark brainlist if correct

MakcuM [25]

The admission fee at a fair is $2.00 for children and $4.00 for adults.

On Saturday 2,500 people entered the fair and $7,000.00 were collected.

How many children and how many adults attended? Give your answer, using x for children, y for adults.

Form of: x =, and y =

Let K = no. of children

Let A = no. of adults

2500 people mean

Kids + Adults

K + A = 2500

K = 2500 – A

2K + 4A = 7000

K + 2A = 3500

(2500 – A) + 2A = 3500

A = 3500 – 2500

(A = 1000, adults)

K = 2500 – A

K = 2500 -1000

(K = 1500, Kids)

CHECK:

1500*2 = $3000

1000*4 = $4000

(Total = $7000, people.).

Hope this helps:

6 0

3 years ago

2 minutes is how many seconds

IrinaK [193]

120 seconds
1 min = 60 seconds

5 0

3 years ago

Read 2 more answers

Show all work!!!!! brainleist will be given!

Gala2k [10]

Answer:

+30

Step-by-step explanation:

1255- 1075 = 180

180 /6 = 30

4 0

3 years ago

In a fish tank 6/7 of the fish have red a stripe on them. If 18 of the fish have red stripes how many total fish are in the tank

Mumz [18]

X - the total number of fish in the tank
6/7 of the fish in the tank have red stripes. 18 of the fish have red stripes.

$\frac{6}{7}x=18 \\
x=18 \times \frac{7}{6} \\
x=3 \times 7 \\
x=21$

There are 21 fish in the tank.

3 0

3 years ago

if there are 48 students in a class and 42% of those students have a dog what percent of students have a dog or a cat?￼

if there are 48 students in a class and 42% of those students have a dog what percent of students have a dog or a cat?