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Sloan [31]
3 years ago
10

Nadine and Calvin are simplifying the expression

Mathematics
1 answer:
Kazeer [188]3 years ago
5 0
What does the problem have to do with Nadine and Calvin?
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Evaluate: f(x) = 2x^2 + 6x - 4; f(-5) *
jasenka [17]

f(x)=2x^2+6x-4\\

Find f(-5) by substituting x = -5 in the equation.

f(-5)=2(-5)^2+6(-5)-4\\f(-5)=2(25)-30-4\\f(-5)=50-34\\f(-5)=16

Therefore, the answer is f(-5) = 16

8 0
3 years ago
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The store offers a 20% discount) The discount price of a hat is $18. What Is the regular price? Please give an explanation or sh
Allisa [31]

Answer: $38

Step-by-step explanation:

you have add 20 & 18 which would give you 38

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3 years ago
I’m kinda confused. Can someone help.
horsena [70]

Answer:

PQ = PM\cos MPQ + MQ\cos MQP=2PM\cos MQP

Step-by-step explanation:

given MQR = 60, PQR = 75

MQP = 75 -60= 15QR = ((18(1+\cos 30))^{2}-(2\cos 15)^{2})^{\frac{1}{2}}

WE KNOW THAT MQR +QRM +QMR = 180

MPQ = MQP AS ANGLE OPPOSITE TO EQUAL SIDES ARE EQUAL

THEREFORE QMR = 90 - 60 = 30

therefore PQM = 75 - 60 = 15

PM = PQ because M is the mid point

therefore PR = PM + MQ\cos QMR

                PR = 18(1+\cos 30)

QR = (PR^{2}-PQ^{2}))^{\frac{1}{2}}

PQ = PM\cos MPQ + MQ\cos MQP=2PM\cos MQP

5 0
3 years ago
A 4-person relay team ran a race in 48 seconds. What was the<br> average time for each person?
lakkis [162]

Answer:12 secondes

Step-by-step explanation:48 seconds/ 4 people= 12 second

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3 years ago
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Work out the value of x- pls I will give Brainliest!!!
lara31 [8.8K]

3x = 2x ( alternate exterior angel)

3x - 2x = 0

x = 0

7 0
3 years ago
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