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nirvana33 [79]
3 years ago
14

Evaluate the expression for the given value of the variable(s). -2x² + 8x – 4; x = -3

Mathematics
1 answer:
Pepsi [2]3 years ago
3 0
The correct answer is -46.
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Are the following ratios proportional 3/4 = 27/36? Write the process needed to determine if the two ratios are proportional to e
Arlecino [84]

Answer:knn

Step-by-step explanation:

8 0
3 years ago
PLEASE HELP! The formula F = 95C + 32, where C stands for temperature in degrees Celsius, is used to convert Celsius to Fahrenhe
Masteriza [31]

The temperature is 86°F when the temperature is 30°C.

Step-by-step explanation:

Formula for Celsius to Fahrenheit;

F = F=\frac{9}{5}C+32

Where C stands for temperature in degrees Celsius.

Given,

Temperature in Celsius = 30 degrees

Temperature in Fahrenheit = \frac{9}{5}*30+32

Temperature in Fahrenheit = 9*6+32

Temperature in Fahrenheit = 54+32 = 86\ degrees\ Fahrenheit

The temperature is 86°F when the temperature is 30°C.

Keywords: temperature, addition

Learn more about addition at:

  • brainly.com/question/1465430
  • brainly.com/question/1466393

#LearnwithBrainly

7 0
3 years ago
You throw a baseball upward with an initial velocity of 35 feet per second. The height h (in feet) of the baseball relative to y
Nostrana [21]

Answer:

35/16 sec    ( 2  3/16  sec)

Step-by-step explanation:

This assumes you glove is at height = 0

0 = -16t^2 + 35t

0 = t ( -16t + 35)    shows t = 0 ( before you throw it) and t = 35/16 sec

7 0
3 years ago
HELP ME HELP ME please !!! 10 points
USPshnik [31]

Answer:

The slope is \frac{3}{2}

The y-intercept is 9

Step-by-step explanation:

The form of the equation that passes through two points (x1, y1) and (x2, y2) is y = m x + b, where

  • m is the slope of the line whose rule is m=\frac{y2-y1}{x2-x1}
  • b is the y-intercept, you can find it by substituting x, y in the equation by (x1, y1) OR (x2, y2)

Let us solve the question:

Choose any two-point from the table

∵ The line passes through the points (2, 12) and (4, 15)

∴ x1 = 2 and x2 = 4

∴ y1 = 12 and y2 = 15

→ Use the rule of m to find it

∵ m=\frac{15-12}{4-2}=\frac{3}{2}

∴ m = \frac{3}{2}

∴ The slope is \frac{3}{2}

→ Substitute its value in the form of the equation above

∴ y = \frac{3}{2} x + b

→ To find b substitute x and y by x1 and y1

∴ 12 = \frac{3}{2} (2) + b

∴ 12 = 3 + b

→ Subtract 3 from both sides

∴ 12 -3 = 3 - 3 + b

∴ 9 = b

∴ The y-intercept is 9

6 0
4 years ago
if a person's total comes to $32.45 and they give you $45.50 but you accidentally type in $40.32 what change would you get them
cupoosta [38]

Answer:

you would give back $7.87. But if you add the $40.50 instead you would give them $8.05

Step-by-step explanation:


4 0
4 years ago
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