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eduard
3 years ago
9

What is the value of 30-2(7+2)-1

Mathematics
1 answer:
Firdavs [7]3 years ago
6 0

Answer: 11

Step-by-step explanation:

30 - 2(7+2)- 1        Distribute or  solve parentheses

30 - 14 -4 - 1  

30 - 19 = 11  

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Help pleasee thank you so much in advance
Solnce55 [7]

Answer:

120

Step-by-step explanation:

180 subtract 60 equals 120

6 0
3 years ago
Read 2 more answers
Graph for 4x + 3y = -3
Serga [27]

Answer:

Your answer is: Slope = -\frac{4}{3} Y-intercept = (0,-1)

Graph the line using the slope and y-intercept, or two points.

Step-by-step explanation:

Graph Below : ↓

Hope this helped : )

6 0
3 years ago
a bag contains 5 red 3 green 4 blue and 8 yellow marbles find the probability of randomly selecting a green marble and then a ye
alexira [117]
The probability of picking a green marble the first time is 3/20 and the probability of picking a yellow marble the second time is 8/20.   
probabilities are heavily related to percents so it would make sense that the probability of picking a color would be the number of that color divided by the total number.

note that it is really important that the problem said that the marble was replaced.  If the marble was not replaced, the probability of picking a yellow marble the second time would be 8/19 if the first marble picked was not a yellow one.

I hope this helps.
5 0
3 years ago
A lighthouse is located on an island 200 feet from the shore of the mainland as
Deffense [45]

Answer: Approximately d = 208.72

============================================================

Work Shown:

Make sure your calculator is in radian mode

A quick way to check is to compute cos(pi) and you should get -1

cos(angle) = adjacent/hypotenuse

cos(x) = 200/d

cos(0.29) = 200/d

d*cos(0.29) = 200

d = 200/cos(0.29)

d = 208.715135166392 which is approximate

d = 208.72

I rounded to two decimal places since x is rounded in that manner as well. Round however else you need if your teacher instructs.

4 0
3 years ago
What is the 75% of 1119
Dominik [7]

Answer:

839.25

Step-by-step explanation:

75 x 1119 / 100 = 839.25

5 0
3 years ago
Read 2 more answers
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