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n200080 [17]
3 years ago
8

Rebecca ran 21 miles in 5 hours. If she ran at a constant speed, how many miles did she run in 2 hours? 8.4 miles 42 miles 4.2 m

iles 1.2 miles
Mathematics
1 answer:
Sholpan [36]3 years ago
6 0

Answer: 8.4 miles

Step-by-step explanation:

d = rt

Solve for her rate

21 = 5r

r = 21/5

r = 4.2

Solve for if the time is 2 hours and rate (solved previously) is 4.2

d = 4.2*2

d = 8.4

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4 0
3 years ago
Ava said she wrote an expression with three terms. She said the first term ha the coefficient 7,the second term have the coeffic
Ronch [10]

Answer:

7*x + y + 0.1*z

Step-by-step explanation:

An expression that satisfy what Ava said she wrote is the following:

7*x + y + 0.1*z

because

  • it has 3 terms (each summand);
  • the coefficient (the number that multiplies the variable) of the first term is 7, of the second term is 1 (it is omitted because 1*y = y) and of the third term is 0.1;
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7 0
3 years ago
Read 2 more answers
For triangle ABC C = 90 Side AC = 13.5 Side BC = 8.6 Find the measure of angle B​
MakcuM [25]

Answer:

57.5°

Step-by-step explanation:

For triangle ABC C = 90 Side AC = 13.5 Side BC = 8.6 Find the measure of angle B​

We solve using the Trigonometric function of Tangent

tan θ = Opposite/Adjacent

θ = Angle B

Opposite = Side AC 13.5

Adjacent = Side BC = 8.6

Hence:

tan θ = 13.5/8.6

θ = arc tan (13.5/8.6)

θ = 57.501354056°

Approximately = 57.5°

Therefore, Angle B = 57.5°

4 0
3 years ago
How on earth do u do this?
11111nata11111 [884]

Answer:

  ΔABC ≅ ΔZXN

Step-by-step explanation:

Find the letters of the matching parts of the triangles.

A is the right angle; as is Z.

B is the angle where 10 meets 26; as is X.

C is the remaining angle; as is N.

__

Corresponding vertices are listed in the same order:

  ΔABC ≅ ΔZXN

4 0
4 years ago
Write the quadratic equation whose roots are 6 and 4, and whose leading coefficient is 4.
Tasya [4]

\bf \begin{cases} x = 6\implies &x-6=0\\ x= 4\implies &x-4 = 0 \end{cases}\qquad \implies (x-6)(x-4)=\stackrel{y}{0} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\mathbb{F~~O~~I~~L}}{x^2-10x+24 = 0}\implies \stackrel{\textit{now we add a common factor of 4}~\hfill }{4(x^2-10x+24)=0\implies 4x^2-40x+96=y}

4 0
3 years ago
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