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3 years ago

Can someone please help me out with this math problem as soon as possible please! And thank you!

Mathematics

1 answer:

lawyer [7]3 years ago

5 0

Answer:

1.11

2.14

3.7

4.10

Step-by-step explanation:

1. 6÷x +9

6÷3=2

2+9=11

2. 8x-3+y

8×2 -3+1

=16-3+1

= 16-2=14

3. 2xy

=2×5×-3

=10-3 =7

4. 2x^2-y

=2×3^2-8

=2×9-8

=18-8

=10

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Ellie has a points card for a movie theater. She receives 50 rewards points just for signing up. She earns 10.5 points for each

Alika [10]

Answer:

14 visits

Step-by-step explanation:

According to the scenario, calculation of the given data are as follows,

Signup rewards = 50 points

Each visit reward = 10.5

Total points needed = 190

Let, number of visits = x

So, we can calculate number of visits by using following formula,

50 + (10.5 × X) = 190

10.5X = 190 - 50

10.5X = 140

X = 140 ÷ 10.5

X = 13.33 or 14 visits.

Hence, she needs to make 14 visits in order to earn a free movie ticket.

7 0

3 years ago

There are 80 girls and 70 boys in the 6th Grade at a middle school. Of these students 12 girls and 9 boys write left handed. Wha

laila [671]

Answer:

About 7% of the students

Step-by-step explanation:

6 0

4 years ago

Read 2 more answers

helena needs 3.5 cups of flour per loaf of bread and 2.5 cups of flour per batch of muffins. she also needs 0.75 cup of sugar pe

tatuchka [14]

The correct answer is:

She can make 2 loaves of bread and 4 batches of muffins.

Explanation:

Let b represent bread and m represent muffins.

The equation for the amount of flour she needs is 3.5b+2.5m=17.

The equation for the amount of sugar she needs is 0.75b+0.75m=4.5.

To solve this, we will want to eliminate one of the variables. To do this, we will make the coefficients of one of the variables the same. If we multiply 2.5 by 0.3, we get 0.75; this is what we will do to the first equation:

$\left \{ {{0.3(3.5b+2.5m=17)} \atop {0.75b+0.75m=4.5}} \right. \\ \\\left \{ {{1.05b+0.75m=17} \atop {-(0.75b+0.75m=4.5)}} \right. \\ \\0.3b=0.6 \\ \\\frac{0.3b}{0.3}=\frac{0.6}{0.3} \\ \\b=2$

She can bake two loaves of bread.

Substituting 2 for b in the first equation, we have

3.5(2)+2.5m=17

7+2.5m=17

Subtract 7 from each side:

7+2.5m-7=17-7

2.5m=10

Divide both sides by 2.5:

2.5m/2.5 = 10/2.5

m = 4

She can bake 4 batches of muffins.

6 0

4 years ago

Read 2 more answers

Find the value of x... Please look at the attachment below

inna [77]

X=75 since it is opposite to the 105 angle.

3 0

3 years ago

Can someone please help me Factor completely 9-6a-24a^2

andreev551 [17]

-24a^2 - 6a + 9
You don't want a negative in front of the variable that is being squared.
-1(24a^2 + 6a - 9)
-3(8a^2 + 2a - 3)
now we use the A C method. what two numbers multiply to equal A×C (8×-3) and add to be B (2)?

6 and -4

-3(8a^2 + 6a - 4a - 3) factor by grouping
-3(2a(4a + 3) -1(4a + 3))
-3(2a - 1)(4a + 3)

hope this helped C:

6 0

3 years ago