2 years ago

What is 485=? Tens +5units

Mathematics

1 answer:

spin [16.1K]2 years ago

4 0

48 ten units and 1 five unit.

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Hamburgers cost $3 and hotdogs cost $2. The total cost of buying b hamburgers and d hotdogs can be expressed by C=3b+2d. How can

Temka [501]

C = 3b+2d is the same as 3b+2d = C

Let's isolate d. To do this, we first need to subtract 3b from both sides

3b+2d = C
3b+2d-3b = C-3b
2d = C-3b

Then divide both sides by 2

2d = C-3b
2d/2 = (C-3b)/2
d = (C-3b)/2

Take note of the parenthesis as they are very important. We want to divide ALL of C-3b over 2. We don't want to just divide -3b over 2.

The answer choices you have aren't 100% clear but I have a feeling your teacher meant to say d = (C-3b)/2 instead of d = C-3b/2 for choice A

If that assumption is correct, then the answer is choice A.

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3 years ago

The total number of calories in a female diet per day should be 1400 calories.

bulgar [2K]

Answer:

420

Step-by-step explanation:

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3 years ago

Read 2 more answers

What is an equation for the linear function whose graph contains the points (−1, −2) and (3, 10)

sladkih [1.3K]

The equation of a line starting from two points is:
$y-y_1=\frac{y_2-y_1}{x_2-x_1} \cdot (x-x_1)$

From the first point you get: x1 = -1, y1 = -2
From the second point you get: x2 = 3, y2 = 10

Replace x1, y1, x2, y2 in the equation of the line and you get:
$y+2=\frac{10+2}{3+1} \cdot (x+1)$
$y+2=\frac{12}{4} \cdot (x+1)$
$y+2=3 \cdot (x+1)$

From this you get the equation of your line:
$y(x)=3x+1$

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3 years ago

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Tom is sorting cookies with his little sister Betty. He notices that when he takes a cookie she takes three cookies, when he tak

telo118 [61]

T 1 2 3 4
B 3 6 9 12
This is linear relationships B=3*T (it can be also called directly proportional)

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3 years ago

8x + 3 - 2(2x + 5) pls answer

snow_lady [41]

Answer:

4x - 7