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Stolb23 [73]
4 years ago
8

​ 21x+7y=42 −5x+5y=10 ​

Mathematics
1 answer:
Alekssandra [29.7K]4 years ago
3 0

Answer:

y=3, x = 1

Step-by-step explanation:

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Arlene had 1/3 as many goldfish as Isabelle. Isabelle has 5 times as many goldfish as Bruce. If Bruce had 18 goldfish, how many
kvv77 [185]

Answer: 30 goldfish

Step-by-step explanation: Bruce has 18 goldfish. If Isabelle has 5 times as many goldfish as Bruce she will have 18*5=90 goldfish. If Arlene has 1/3 times as many goldfish as Isabelle she will have 90/3=30 goldfish.

7 0
3 years ago
Please help me: Ten athletes ran two races of the same length. The scatter plot shows their times. Identify each of these statem
Lemur [1.5K]

The scatter plot has been attached

Answer:

Options C, D & E are true

Step-by-step explanation:

Option A is wrong because from the scatter plot, only four athletes were faster in the second race than in the first one.

Option B is wrong because only 1 athlete had his second race time differing from the first race time by exactly 2 seconds.

Option C is true because exactly 9 of the times for the first race were at least 16 seconds

Option D is true because there are exactly 3 athletes who had the same time in both races

Option E is true because 8 of the times for the second race were less than 17 seconds

4 0
3 years ago
HELPPP PLEASE!!!!!!!!!!!
Svetlanka [38]

Answer:

C

Step-by-step explanation:

calculate the slope m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (0, 2) and (x₂, y₂ ) = (4, 0) ← 2 points on the line

m = \frac{0-2}{4-0} = \frac{-2}{4} = - \frac{1}{2}

the y- intercept is the value of y where the line crosses the y- axis , then

y- intercept = 2

8 0
3 years ago
2 _<br> 3 --- + 2.3=<br> 3<br><br><br> giving 25 points for the right answer asap
meriva

3 \frac{2}{3}  + 2.3 \\\implies 3 \frac{2}{3} + \frac{23}{10} \\\implies \frac{11}{3} + \frac{23}{10} \\\implies \frac{110+69}{30} \implies \frac{179}{30}

8 0
3 years ago
Read 2 more answers
Please help it’s probably Easy but I don’t know
hoa [83]

Answer:

7 × 1/5

Step-by-step explanation:

hope this helps

7 × 1/5= 1.40

7 0
3 years ago
Read 2 more answers
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