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2 years ago

How to get 14 using four fours

Mathematics

1 answer:

Len [333]2 years ago

5 0

Answer:

Step-by-step explanation:

$4 \times (4 - .4) -. 4$

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Joanna went school supply shopping. She spent $30.70 on notebooks and pencils. Notebooks cost $2.20 each and pencils cost $1.09

aleksandrvk [35]

Ok, so we need to set up a system of equations.

x + y = 19, where x is notebooks and y is pencils

2.2x + 1.09y = 30.70. You use the coefficient for individual prices and the total for the total given.

2.2x + 2.2y = 41.8 (multiply for elimination later)

2.2x + 1.09y = 30.7

1.11y = 11.1

y = 11.1/1.11

y = 10

Now we use the substitution method in x + y = 19

x + 10 = 19

x = 9

9 notebooks and 10 pencils

8 0

3 years ago

Peter filled 5 cups each with 1one-half pounds of candy. How much candy did the 5 cups contain altogether?

Natasha_Volkova [10]

Answer:

5 cups contain <u>7one-half pounds</u> of candy.

Step-by-step explanation:

Given:

Peter filled 5 cups each with 1one-half pounds of candy.

Now, to find the total candy 5 cups contain altogether.

1 cup of candy contain = $1\frac{1}{2} \ pounds$

So, to get candy 5 cup contain we multiply 5 by $1\frac{1}{2} \ pounds$ .

$5\times 1\frac{1}{2} \\=5\times \frac{3}{2} \\=\frac{15}{2} \\=7\frac{1}{2}$

Therefore, 5 cups contain 7one-half pounds of candy.

4 0

2 years ago

First answer = brainliest

Norma-Jean [14]

Answer:

A=28.26 in²

Step-by-step explanation:

We are given the formula for the area of a circle which is:

$A=\pi r^2$

Which means:

Area = π*radius of circle²

The radius of a circle is the length from the center of the circle to the edge of the circle.

The image tells us the radius of the circle is 3 in and the questions asks us to use 3.14 for π, therefore...

A=3.14*3²

A=3.14*9

A=28.26 in²

7 0

2 years ago

Read 2 more answers

Can someone do this for me i will mark as brainliest answer :) :/ ? tysmm

Veronika [31]

Use PEMDAS I think

Explain:::
I think

7 0

2 years ago

Pls help ASAP please please

ahrayia [7]

Answer:

(-4, -3)

Step-by-step explanation:

if you are happy with my answer, please give brainliest :)

3 0

3 years ago

Read 2 more answers