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bulgar [2K]
3 years ago
9

Need help with maths

Mathematics
2 answers:
Kamila [148]3 years ago
6 0

Answer:

a) 48

b)

c) 13, 23, 43,

Step-by-step explanation:

since i helped you with a and c, try and figure out b on your own.

i will give you a link if you want it so you can watch a video on how to find square numbers

Tema [17]3 years ago
5 0

Answer:

a) 48

b) 81

c) 13, 23, 43

Step-by-step explanation:

\sqrt{81}  =9

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An arithmetic series contains 20 numbers. The first number is 102. The last number is 159. Which expression represents the sum o
Whitepunk [10]

Answer:

Option B

Step-by-step explanation:

we know that

The sum of an arithmetic series is equal to

S=n(a1+an)/2

where

a1 is the first term

an is the last term

n is the number of terms

In this problem we have

n=20

a1=102

an=159

substitute the values in the formula

S=20(102+159)/2

3 0
3 years ago
Can someone help me with this?
hammer [34]

Answer:

Shaded area is 55 units²

Step-by-step explanation:

Ignoring the white cutout, we have a rectangle of length 10 and width 7 (count the squares in each direction).  The area of this larger rectangle is

(10 units)(7 units) = 70 units².  The white area that we previously ignored has dimensions 3 by 5 units, and thus an area of 15 units²  

Subtract the latter from the former, obtaining the net area

70 units² - 15 units² = 55 units²

8 0
3 years ago
A spinner and 6 cards are shown below: A spinner with 3 equal sectors is shown in the figure. The colors Green, Blue, and Red ar
Keith_Richards [23]
This is a case of joint probability: you want to know what the odds are of this event AND that event occurring. For a joint probability, the formula is usually given as:

P(A and B)=P(A)*P(B)

where P(A) is the probability of event A happening, P(B) is the probability of event B happening, and P(A and B) is the probability of both happening.

For this problem, let's say that event A is the probability that the spinner stops at the green color. Since the spinner has 3 colors and they have equal area (sector) occupied in the circle, each color has the same chance, 1/3 chance of being picked. Thus, there's a 1/3 chance of the spinner stopping at the green color so P(A)=1/3.

Event B is the probability of Jordan picking up the yellow card. There are six possible colors to pick and since Jordan picked up the card without peeking, each color has an equal chance to be picked. Thus, there's a 1/6 chance that the yellow card will be selected so P(B)=1/6.

Using the formula, we can then calculate P(A and B), the probability that the spinner stops at green and a yellow card is selected:

P(A and B)=P(A)*P(B)=1/3*1/6=1/18
4 0
3 years ago
Read 2 more answers
Solve logx64=3/2 for the unknown parameter.
katrin [286]

Answer:

x  {}^{ \frac{3}{4} }  = 64 \\ x = 4 {}^{4}  = 256 \:  \:  \: ans.

6 0
3 years ago
Floyd's employer purchased a health insurance plan that costs $825 per month. Floyd pays $105 toward the plan each month. What i
mash [69]
825-105=720. 720x12=8640
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