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weeeeeb [17]
3 years ago
13

Please help me! I am struggling

Mathematics
1 answer:
Ket [755]3 years ago
3 0
X =80 its a simple problem
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whitney is training to ride her bicycle in a big race. The table below shows hiw many miles she rides each day of one week​
hoa [83]

Answer: C (24.5 miles more)

Step-by-step explanation:

on Friday she rode 42.4 miles

on Tuesday she rode 17.9 miles

you just subtract Tuesday’s miles from Friday’s miles

42.4 - 17.9 = 24.5

so, C

7 0
3 years ago
–0.8b2+7.4b+(5.6b–0.2b2)
e-lub [12.9K]

Answer:

Simplify the expression.

− 1b^{2}+ 13 b

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Lily is cutting a piece of yarn into 3 (three) pieces. The 2nd piece is 3 times as long as the 1st piece, while the 3rd piece is
STatiana [176]

Answer:

The length of the first piece = 41 cm

Step-by-step explanation:

Let the length of the first piece = a

Let the length of the second piece = b

Let the length of the third piece = c

we are given the following:

b = 3a . . . . . (1)     (The 2nd piece is 3 times as long as the 1st piece)

c = 6 + a  . . . . (2)    (the 3rd piece is 6 centimeters longer than the 1st piece)

a + b + c = 211 . . . . . (3)    (  the yarn has a total length of 211 centimeters)

Next, let us eliminate two variables, and this can easily be done by substituting the values of b and c in equations 1 and 2 into equation 3. this is done as follows:

a + b + c = 211

a + (3a) + (6 + a) = 211       ( remember that   b = 3a; c = 6 + a)

a + 3a + 6 + a = 211

5a + 6 = 211

5a = 211 - 6 = 205

5a = 205

∴ a = 205 ÷ 5 = 41 cm

a = 41 cm

Therefore the length of the first piece (a) = 41 cm

now  finding b and c

substituting a into equation 1 and 2

b = 3a

b = 3 × 41 = 123

∴ b = 123 cm

c = 6 + a

c = 6 + 41 = 47

∴ c = 47 cm

6 0
3 years ago
Someone help me ( view picture below )
oksano4ka [1.4K]

Answer:

D. 13

Step-by-step explanation:

x = 5

2 x 5 + 3 = 13

5 + 8 = 13

meaning the side length has to be 13, also.

5 0
3 years ago
Your supposed to put the 4 answers in the correct spots. Please help!
andrew-mc [135]

Answer:

I can't see the question

Step-by-step explanation:

sorry

maybe try asking the same question again

3 0
3 years ago
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