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dalvyx [7]
2 years ago
7

Evaluate the expression, using the given value of the variable.

Mathematics
2 answers:
kvv77 [185]2 years ago
8 0
= 4 -(2)(4) + (5)(4) \\ =4 - 8 + 20  \\ = 16

x = 16
dimulka [17.4K]2 years ago
8 0
4-2x+5x \\ 4-2(4)+5(4) \\ 4-8+20 \\ -4+20 \\ =16  \\  A.16
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A humpback whale swims at 40mph for 30 minutes, then rests for 15 minutes, then swims at 32 mph for 45 minutes. What is the whal
klasskru [66]
Average speed=totaldistance/ttoaltime

d=rt
40mph for 30mins (1/2 hr), travels 20mi
rest for 15min (1/4 hr), travels 0mi
swims at 32mph for 45min (3/4hr), travels 96/4=24mi

total distance=20+0+24=44
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about 29 and 1/3 mph
6 0
2 years ago
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In a chess tournament, each player is in one game with every other player. How many games will be played if there are 7 players
Elza [17]
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6 0
3 years ago
Roberta Arthur had the following reciepts for the week of April 12th: 50$ gift; 25$ rebate; April 13th, 2.45$ refund on aluminum
oksian1 [2.3K]

Answer:

$329.44

Step-by-step explanation:

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322.44+7.00= 329.44

I didnt see april 15 if its supposed to be added i there just add 299.89 to the total.

7 0
2 years ago
20 points!!! I’ll give brainliest!
shusha [124]
ANSWER:
In triangles BEC and AED
1)BC=AD(given)
2)Angle BCD= Angle ADC(given)
Then,Angles BCE=Angle ADE
3)Angle BEC=Angle AED(vertically opposite angles)
Thus,triangleBEC=~triangle AED( by AAS rule)

Thus,DE=CE (By CPCTC)

HOPE IT HELPS!!!!!
PLEASE MARK BRAINLIEST!!!!!
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3 years ago
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Evaluate the series 9 + 3 + 1 + . . .
brilliants [131]
Keep dividing by 3 to get the rest of the answers.
7 0
3 years ago
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