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meriva
4 years ago
9

Find the product: (-3)(-5)

Mathematics
2 answers:
MariettaO [177]4 years ago
6 0

Answer:

15

Step-by-step explanation:

-3 times -5 equals 15 because two negatives multiplied by each other equals a positive.

Ber [7]4 years ago
6 0

Answer:

15

Step-by-step explanation:

because when you multiply two negative numbers which in this example is -3 and -5 you get a positive number which is 15

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A triangle has a side length of 5.4 and 7 x x=​
Burka [1]

Answer:

D. 8.8

Step-by-step explanation:

As the pythagorean theorem.

A² + B² = C²,

5.4 × 5.4 + 7 × 7 = C²,

29.16 + 49 = C²,

78.16 = C²,

8.8 ≈ C

4 0
3 years ago
Which values are solutions of the inequality 6 x + 4 < 22 ? Select two answers.
zubka84 [21]

Answer: D and E

Step-by-step explanation:

To find this answer we want to get x by itself in the equation.

6x + 4 < 22

6x < 18

x < 3

So according to this the value of x has to be less than 3.

You can check your answer by substituting the values in for x.

6(0) + 4 < 22

4 < 22 is True

6(2) + 4 < 22

16 < 22 is True

6(3) + 4 < 22

22 < 22 False!

8 0
3 years ago
The value of y varies directly with x. If x = 4, then y = 32. What is the value of x when y = 128?
pashok25 [27]

Answer:

32/4= 8  (there is a factor of 8 between x and y at all times)

128/8 = 16  (divide y by 8 to find out what x is.

x= 16 when y= 128

Step-by-step explanation:

6 0
3 years ago
The quadratic function f(x)=ax^2+4x+c has a maximum at the point (1, 9) . What are the values of a and c?
valina [46]

Answer: a = -2  and  c = 7

Step-by-step explanation:

(this answer uses some basic calculus)

We know that f'(x) = 2ax + 4, and since (1,9) is a maximum of f, then f'(1) = 0. That means 2a + 4 = 0, so \boxed{a = -2}. Then since f(1) = 9, we have -2(1)^2 + 4(1) + c = 9, so \boxed{c = 7}.

6 0
3 years ago
Read 2 more answers
Find the value for x:
svetlana [45]

Answer:

I haven't learned this yet but you can ask a tutor

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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