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3 years ago

What is this equations name: ax+by=c

Mathematics

1 answer:

Tju [1.3M]3 years ago

4 0

This is standard form for a linear equation

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Six times a number is greater than 20 more than that number. What are the possible values of that number? On-4 On>4 20 On>

Vaselesa [24]

Answer:

a > 4

Step-by-step explanation:

$6a > 20 + a \\ collect \: like \: terms \\ 6a - a > 20 \\ then \: add \\ 5a \: > 20 \\ divide \: both \: sides \: by \: 5 \\ \frac{5a}{5} > \frac{20}{5} \\ a > 4$

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2 years ago

You want to have an equal number of 5 noisemakers and 30 balloons at your party.What is the least number of packs of each you ca

Verizon [17]

Answer:

6 pk noisemakers (6 x 5 = 30 noisemakers)

1 pk balloons (1 x 30 = 30 balloons)

Step-by-step explanation:

divide 30 by 5, = 6

buy 6 packs noisemakers and one pack of balloons

4 0

3 years ago

Kellogg's produced 715000 boxes of cornflakes this year. This was 110% of annual production last year. What was last year's annu

Charra [1.4K]

Let last year product be x boxes.

110% of x means $\displaystyle{ \frac{110}{100}\cdot x$ .

Thus, we solve the equation:

$\displaystyle{ \frac{110}{100}\cdot x=715,000$ .

Multiplying both sides by $\displaystyle{ \frac{100}{110}$ , we have:

$\displaystyle{ x=715,000 \cdot \frac{100}{110}=650,000$ .

Answer: Last <span>year's annual production was 650,000 boxes.</span>

6 0

3 years ago

A magazine cover measures 28 cm by

Rudik [331]

I don’t know got a message but she’s like actually i

8 0

3 years ago

The part of a cylindrical soup can that is covered by the label is 8.5 cm tall and has a diameter of 6.5 cm. What is the area of

julia-pushkina [17]

Answer:

$180.4~cm^2$

Step-by-step explanation:

<u>Surface Area</u>

The surface area of a cylinder of height h and radius r is given by:

$A=2\pi rh$

It only covers the lateral side of the cylinder. If both the top and the bottom sides are to be included, then:

$A=2\pi rh+2\pi r^2$

The label will cover only the lateral side of the soup can that has a height of h=8.5 cm and a diameter of 6.5 cm. We need to calculate the radius which is half of the diameter r=6.5 cm / 2 = 3.25 cm.

Now we calculate the side area of the can:

$A=2\pi (3.25)(8.5)$

$A=173.6~cm^2$

We need to add the 0.8 cm overlap to the total area already calculated. This overlap has 0.8 cm of width and 8.5 cm of height, so this overlap area is:

$A_o= 0.8*8.5=6.8~cm^2$

The total area of the label is:

$A=173.6~cm^2+6.8~cm^2=180.4~cm^2$

The area of the label is $\mathbf{180.4~cm^2}$

5 0

3 years ago