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maxonik [38]
3 years ago
14

Xis directly proportional to y.

Mathematics
1 answer:
OleMash [197]3 years ago
6 0
X = k x y
21 = k x 3
k = 7
x = 7y

x = 7(10)
x = 70
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In Aunt Melly's attics there are also spiders and ants, the total of 136 legs and 20 heads. If a spider has 8 legs and an ant ha
anzhelika [568]

Answer:

Spiders=8

Ants=12

Step-by-step explanation:

Spider(s)=8 legs

Ants(a)=6 legs

Total legs=136

Total heads=20

8s+6a=136 (1)

s+a=20 (2)

From (2)

s=20-a

Substitute 20-a into (1)

8s+6a=136

8(20-a)+6a=136

160-8a+6a=136

160-2a=136

-2a=136-160

-2a=-24

a= -24/-2

a=12

Substitute a=12 into (2)

s+a=20

s+12=20

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3 0
3 years ago
What is the percent of 840 is 546
lesantik [10]
K so its an equation      546         x
                                   over   = over
                                   840       100
when u do cross multiplication it will be 840x=546 * 100
                                                       x is about 64%
Hope this is helpful
4 0
3 years ago
Which numbers are factors of 4? Select all that apply.<br><br> 1<br> 4<br> 2<br> 3
brilliants [131]

Answer:

1,2,4

Step-by-step explanation:

Factors are the numbers that we can multiply together to make 4

1*4 = 4

2*2 = 4

The factors are 1,2 and 4

4 0
3 years ago
Read 2 more answers
I<br> 1<br> 8 in<br> Find h.<br> 13 in<br> = √[?] in.
Archy [21]

as the following pic you can see the answer.

#diameter is 8 so radius is 4

8 0
2 years ago
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sdas [7]
From the given data we shall obtain the following boxplot, which we can generate the information given:

<span>5.5, 5.7, 5.8, 6.0, 6.1, 6.1, 6.3, 6.4, 6.5, 6.6, 6.7, 6.7, 6.7, 6.9, 7.0, 7.0, 7.0, 7.1, 7.2, 7.2, 7.4, 7.5, 7.7, 7.7, 7.8, 8.0, 8.1, 8.1, 8.3, 8.7

1st Qu=6.425
3rd Qu=7.650

</span>

4 0
3 years ago
Read 2 more answers
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