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lisabon 2012 [21]
3 years ago
10

Need help ??????????????

Mathematics
1 answer:
lesantik [10]3 years ago
6 0

Answer: the answer is the first one ,the third one , and the fourth

Step-by-step explanation:5x5 25

15x15 225

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Find the slope of the line that passes through the pairs of points ( 7, 4), (-4,5)
lilavasa [31]

Answer:

The slope is 1/-11.

Step-by-step explanation:

Slope (m) =  

ΔY /ΔX =  

1 /-11  = -0.090909090909091

7 0
3 years ago
Find the volume of the triangular prism, given the area of the base is 14 cm2 and the height of the prism is 15 cm.
laiz [17]

Answer:

210  cm³

Step-by-step explanation:

RULE :

the volume of the triangular prism = the area of the base × the height

                                                         = 14 × 15

                                                         = 210

3 0
3 years ago
Abel planned for a garden to be 42 m long but found that it needs to be 24 m long to fit in his backyard. He found the change of
Tom [10]

Question:

Abel planned for a garden to be 42 m long but found that it needs to be 24 m long to fit in his backyard. He found the change of scale below.

\frac{42m}{7}/{\frac{24m}{7} = \frac{6}{4}

Which is Abel’s error?

Abel should have written the ratio as 24 metres/7 metres

Abel should have written the ratio as 24 metres/42 metres

Abel should have divided both numbers by 6.

Abel should have divided both numbers by 4.

Answer:

Abel should have divided both numbers by 6.

Step-by-step explanation:

Given

Measured Length of backyard = 42m

Actual Length of backyard = 24m

Measured Ratio: \frac{42m}{7}/{\frac{24m}{7} = \frac{6}{4}

Required

Error in calculation of measured ratio

From Abel's calculation:

It can be observed that He divided both numbers by 7

Though 42/7 = 6 but that's not so for 24/7

24/7≠4;

Instead 24/7 = 3.43 (Approximated)

To get the actual ration, he has to divide both numbers by the highest common factor

The common factors of 42 and 24 include 2,3,6 of which the highest is 6

Hence; HCF of 42 and 24 = 6

So, we can conclude that the error in his calculation is having not dividing both numbers by 6

7 0
3 years ago
Read 2 more answers
Please solve the system of equations below thank you<br> explain if u can
ivanzaharov [21]
First let’s try to cancel out the x
5x + -5x = 0
Add the y and the numbers together
-3y + -2y = -5y
26 + -16 = 10
-5y = 10
y = -2
Use y=-2 in one of the equations
-3(-2) + 5x = 26
6 + 5x = 26
5x = 20
X = 4

So
Y= -2
X= 4

https://mathsmadeeasy.co.uk/gcse-maths-revision/simultaneous-equations-gcse-maths-revision/

Check this link out for more help!
7 0
2 years ago
Saturn the ring system around saturn has a diameter of 170000miles. find the circumference of the ring system.
Daniel [21]

Answer:

534,070.75 miles

Step-by-step explanation:

The circumference formula is d\pi or 2r\pi.

But since we're given the diameter, 170,000, all we have to do is multiply it by \pi.

170000*\pi = 534070.75 (Rounded)

3 0
3 years ago
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