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3 years ago

ASAP!!! PLS SHOW ALL WORK + STEPS! THX!

Mathematics

1 answer:

Andreas93 [3]3 years ago

7 0

Answer: For the graph,

43. y=2.5x−4

45. y=−15x+3

47. y=12x+−94

Step-by-step explanation:

43.

Let's solve for x.

y=2.5x−4

Step 1: Flip the equation.

2.5x−4=y

Step 2: Add 4 to both sides.

2.5x−4+4=y+4

2.5x=y+4

Step 3: Divide both sides by 2.5.

2.5x2.5=y+42.5

x=0.4y+1.6

Answer:

x=0.4y+1.6

45.

Let's solve for x.

y+15x=3

Step 1: Add -y to both sides.

15x+y+−y=3+−y

15x=−y+3

Step 2: Divide both sides by 1/5.

15x15=−y+315

x=−5y+15

Answer:

x=−5y+15

47.

Let's solve for x.

2x−3=4y+6

Step 1: Add 3 to both sides.

2x−3+3=4y+6+3

2x=4y+9

Step 2: Divide both sides by 2.

2x2=4y+92

x=2y+92

Answer:

x=2y+92

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What number divided by -7 is equal to -15

steposvetlana [31]

Answer:

$x = -105$

Step-by-step explanation:

What number divided by -7 is equal to -15

∨ ∨ ∨ ∨ ∨

x ÷ -7 = -15

Multiply -7 to both sides:

$\frac{x}{-7}=15$

$x = -105$

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Answer:

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Step-by-step explanation:

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3 years ago

The ratio of red poms to yellow poms on a float is 5 to 7. if there are 392 yellow poms on the float, how many red poms are ther

Marysya12 [62]

Ratio is written in x:y. therefore for this case, red:yellow
5 : 7

since the question states that there are 392 yellow poms, the 7 units represents 392 yellow poms. now you have to gind what is one unit and then multiply by 5 to find the number of red poms.

392 represents 7 units
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3 years ago

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3 years ago

How many times greater is 3.8 x 105 than 1.9 X 1022 2 20 200 2000

PilotLPTM [1.2K]

Step-by-step explanation:

there must be something wrong with your text.

what we can see is

3.8 × 105

and

1.9 × 1022

the true answer for these values has nothing to do with the 4 answer options.

maybe you meant

1.9 × 10.5 ?

because that answer would be 20.

but first working with the presented numbers :

3.8 × 105 = 399

1.9 × 1022 = 1941.8

so, the second number is actually much bigger than the first number.

but if it is

1.9 × 10.5 = 19.95

that works.

and we can either use the calculator to calculate

399 / 19.95 = 20

or we can simply look at the factor changes of the multiplication terms.

3.8 = 1.9 × 2

105 = 10.5 × 10

so, the multiplication product of the two larger numbers is then 2×10=20 times larger than the product of the 2 smaller numbers.

7 0

3 years ago