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3 years ago

6

It is stated that a quantity varies directly as another if the two quantities always change in the same ratio. So, what would ha

ppen to the quantity y if the quantity x doubles in value?

1 answer:

lys-0071 [83]3 years ago

5 0

Answer:

2k

Step-by-step explanation:

Let k is the ratio between two variables or y = kx

when x double, means: y = k (2x) = 2kx quantity y will change with a ratio 2k

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Simplify | 4-9 | <br> A)13<br> B)5<br> C)-5<br> D)-13

ElenaW [278]

Answer: The Answer is -5

Step-by-step explanation:

Ok so we have the numbers 4 and 9 and in this equation we are simplifing them by doing 4-9.

this is easy, we do 4-9 which is -5, you can even check this on a calculator. Plz follow me on twitch, InfernoEliteGamingYT21

6 0

3 years ago

Read 2 more answers

A rectangular box with an open top has a length of x feet, a width of y feet, and a height of z feet. It costs $4.30 per square

almond37 [142]

Answer:

C=$(4.30xy+5.40(xz+yz))

Step-by-step explanation:

Surface Area of a Cuboid=2(LW+LH+HW)

Since the top is open

Surface Area = LW+2(LH+HW)

If Length = x feet,

Width =y feet

Height = z feet

Surface Area = xy+2(xz+yz)

Area of the base=xy

If it costs $4.30 per square foot to build the base

Cost of the base=Cost Per Square Foot X Area = $4.30xy

Area of the sides =2(xz+yz)

If it costs $2.70 per square foot to build the sides

Cost of the sides=Cost Per Square Foot X Area of the sides

= 2.70 X 2(xz+yz)

=5.40(xz+yz)

Cost of Constructing the Box = Cost of Constructing the Base + Cost of Constructing the Sides.

Therefore,

C=$(4.30xy+5.40(xz+yz))

7 0

3 years ago

Matthew is making a sequence in which -3 is added to each successive term. The 6th term in his sequence is -1. What is the 1st t

Hatshy [7]

Answer:

The first term is 14.

Step-by-step explanation:

The general formula for this kind of sequence (arithmetic) is a(n) = a(1) + (n-1)c, where c is the common difference. Here, we have a(6) = -1 = a(1) + (6-1)(-3), or -1 +15 = a(1). The first term is 14.

3 0

3 years ago

There are some nickels dimes and quarters in a large piggy bank for every two nickels there are 3 dimes for every two dimes that

creativ13 [48]

We are given

piggy bank has nickels , dimes and quarters

Let's assume

number of nickels =n

every two nickels there are 3 dimes

so, number of dimes are

$=\frac{3}{2}n$

$=1.5n$

every two dimes that are 5 quarters there

so, number of quarters are

$=\frac{5}{2}\times 1.5n$

$=3.75n$

so, total number of coins = number of nickels + number of dimes +number of quarters

total number of coins =n+1.5n+3.75

there are 500 coins

so, we get

$n+1.5n+3.75n=500$

now, we can solve for n

$6.25n=500$

divide both sides by 6.25

so, we get

$n=80$

number of dimes is 1.5n

$=1.5\times 80$

$=120$

number of quarters is 3.75n

$=3.75\times 80$

$=300$

so,

Number of nickels =80

Number of dimes =120

Number of quarters =300............Answer

6 0

4 years ago

How do you wirte 7.632 in two other forms

Alenkinab [10]

Answer:

763.2% or 954/125

Step-by-step explanation:

5 0

4 years ago