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sergejj [24]
3 years ago
9

PLS HELP!! 1 through 8, if you answer you don’t have to do them all just at least a few pls

Mathematics
2 answers:
GenaCL600 [577]3 years ago
3 0

Answer:

1) 29

2) 64

you can use the explanation below to help find the other 6 problems

Step-by-step explanation:

1) 4(5+6) - 15 = 4 * 11 - 15 = 44 - 15 = 29

2) 8(2+4) + 16 = 8 * 6 + 16 = 48 + 16 = 64

Inessa [10]3 years ago
3 0

Answer:

=29

Step-by-step explanation:

4(5+6)−15  answer is 29

3(14-7)-16 answer is 5

10(6-5)-3(9-6) answer is 1

2(8+3)+4^2 answer is 38

8(2+1)^2-4^2 answer is 56

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4) Find the area. 7 cm 9 cm 12 cm​
EleoNora [17]

Answer:

756

Step-by-step explanation:

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Jenny earned 92 of a possible 120 points on a test. She lost 4 points for each
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Jenny missed 7 problems on the 120 point test
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Which represents a quadratic function ?
mars1129 [50]

Answer:

\boxed{\boxed{B.\ f(x)=\dfrac{3}{4}x^2+2x-5}}

Step-by-step explanation:

Quadratic function-

It is a function that can be represented by an equation of the form f = ax^2 + bx + c, where a\neq 0

In a quadratic function, the greatest power of the variable is 2.

As in the first option the highest power is 3, so it is not a quadratic function.

Even though the power of x is 2 in the third option, but as it is in the denominator, so the overall power of x becomes -2. Hence it is not a quadratic function.

As the coefficient of x^2 is 0 in case of fourth option, so it is not a quadratic function.

Equation in option 2 satisfies all the conditions of quadratic function, hence it is the quadratic function.

8 0
3 years ago
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If AE=6x-55 and EC=3x-16, find DB. (Hint: Find x first and then substitute.)
erica [24]

<u>Given</u>:

Given that ABCD is a rectangle.

The diagonals of the rectangle are AC and DB.

The length of AE is (6x -55)

The length of EC is (3x - 16)

We need to determine the length of the diagonal DB.

<u>Value of x:</u>

The value of x can be determined by equating AE and EC

Thus, we have;

AE=EC

Substituting the values, we get;

6x-55=3x-16

3x-55=-16

       3x=39

         x=13

Thus, the value of x is 13.

<u>Length of AC:</u>

Length of AE = 6(13)-55=78-55=23

Length of EC = 3(13)-16=39-16=23

Thus, the length of AC can be determined by adding the lengths of AE and EC.

Thus, we have;

AC=AE+EC

AC=23+23

AC=46

Thus, the length of AC is 46.

<u>Length of DB:</u>

Since, the diagonals AC and DB are perpendicular to each other, then their lengths are congruent.

Hence, we have;

AC=DB

 46=DB

Thus, the length of DB is 46.

6 0
3 years ago
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