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Sladkaya [172]
3 years ago
9

3xy-5x^2 when x=2 and y=-4

Mathematics
1 answer:
Vitek1552 [10]3 years ago
3 0
-1156 is your answer
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Divide 650 sweets between Cia, Mia and Tia in the proportion 3:4:6. Calculate how many sweets each girl gets.​
vodka [1.7K]

Answer:

150, 200, 300

Step-by-step explanation:

sum the parts of the ratio , 3 + 4 + 6 = 13 parts

divide the total by 13 to find the value of one part of the ratio

650 ÷ 13 = 50 ← value of 1 part of the ratio , then

3 parts = 3 × 50 = 150 ← number of sweets Cia gets

4 parts = 4 × 50 = 200 ← number of sweets Mia gets

6 parts = 6 × 50 = 300 ← number of sweets Tia gets

5 0
1 year ago
14/1 ÷ 3/8 = please show work and answer fast​
jarptica [38.1K]

Answer: 37 1/3

Step-by-step explanation:

14/1÷3/8=?

Dividing two fractions is the same as multiplying the first fraction by the reciprocal (inverse) of the second fraction.

Take the reciprocal of the second fraction by flipping the numerator and denominator and changing the operation to multiplication. Then the equation becomes

14/1 × 8/3=?

For fraction multiplication, multiply the numerators and then multiply the denominators to get

14×8/1×3 = 112/3

This fraction cannot be reduced.

The fraction

112/3

is the same as

112÷3

Convert to a mixed number using

long division so

112/3=37 1/3

Therefore:

14/1 ÷ 3/8=37 1/3

5 0
3 years ago
What is the standard form for 6.57 * 10
IrinaK [193]

Answer:

65.7

Step-by-step explanation:

Give hears please for how good the answer was

7 0
3 years ago
Solve for the variable. -2x = -15
MakcuM [25]
The variable is x=15/2
8 0
3 years ago
I WILL GIVE BRAINLIEST
Ber [7]

Answer:

The answer is 450

Step-by-step explanation:

I got this equation:

x- the speed in which the turtle walks

5x+5(x+10)=4.5x+150+x*(150)/(x+10)

I got x=40, x=-50/11, but you can't have negative speed, so the turtle's speed is 40 meters per hour. After that, I just plugged in x onto one of the expressions and got 450.

4 0
3 years ago
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