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Anettt [7]
2 years ago
15

Evaluate the expression 4x² – 13y for x = 3 and y = 2.

Mathematics
2 answers:
Ket [755]2 years ago
5 0

Answer:

The answer is 10

Step-by-step explanation:

1.  4 x 3²  - 13 x 2

2. 4 x 9 - 13 x 2

3. 4 x 9 - 26

4. 36 - 26 = 10

5. = 10

irina [24]2 years ago
3 0

Answer: 118

Step-by-step explanation: if x=4 then 4x3 to the 2nd power= 144. 13x2=26

144-26=118

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Simplify the ratio of 35:14
Shalnov [3]

Step-by-step explanation:

35 : 14

Divide by 7

5 : 2

We cannot divide it further so the answer is 5 : 2

3 0
3 years ago
I need this asap someone help me plz
alexandr1967 [171]

Answer:

660 nails

Step-by-step explanation:

Take all of john's nails and multiply by 4.4 because 176/40 is 4.4. Multiply 4.4 by the john's other nails. Add the products together and thats your answer.

5 0
2 years ago
Cara has 25$ to buy dry pet food and treats for the animal shelter. A pound of dog food cost $2 and treats are $1 apiece. If she
alina1380 [7]
Let x be the number of treats bought
Let y be the pounds of food bought

25= 2y+x

Given that she has buys 9 pounds of dog food:

25= 2(9)+x
25=18 +x
25-18 =x
7=x

With the money she has left over, she can buy 7 treats.

Hope I helped :)
5 0
3 years ago
Monica paid sales tax of $2.80 when she bought a new bike helmet. If the sales tax rate was 7%, how much did the store charge fo
larisa [96]

7 % of cost price is 2.80 , What about 1%?

7 = 2.80

1 = x   (where x is the price value of 1% in dollars)

We simplify the above equation, so:

7 × x = 2.8 × 1  →  7x = 2.8 →  x = 2.8 / 7  →   x = 0.4 dollars

We know that 100%  represents the whole price,

so if 1% is 0.4 dollars, then 100% will be 0.4 × 100 = 40 dollars

Therefore the store charged $40  dollars for the helmet before tax




5 0
2 years ago
Can someone explain how to get the answer if do 5 stars and have good rating
8_murik_8 [283]

Answer:

3:1

Step-by-step explanation:

We know that the number of students who prefer cheese AND vegetable pizza is 16 cheese + 2 vegetable = 18 combined

We also know that the number of students who prefer sausage AND pepperoni pizza is 3 sausage + 3 pepperoni = 6 combined

If we take the ratio between these figures, this ratio would be 18:6 (read as 18 to 6) which simplifies to 3:1 (read as 3 to 1).

5 0
2 years ago
Read 2 more answers
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