All categories

4 years ago

Altogether, Tim, Laura, and Eric worked 210 hours campaigning for their friend Jake who was running for the senate. Laura worked

10 hours more then Tim, and Eric worked twice as many hours as Laura. How many hours did Laura work on the campaign?

Mathematics

1 answer:

Gekata [30.6K]4 years ago

3 0

$Let \: x \: be \: the \: time \: which \: Laura \: worked \\ The \: time \: Tim \: worked:x - 10 \\ The \: time \: Eric \: worked:2x \\ We \: have \: an \: equation:x + x - 10 + 2x = 210 \\ < = > 4x = 220 \\ < = > x = 55 \: (hrs) \\ So \: Laura \: worked \: for \: 55 \: hours \: on \: the \: campaign.$

You might be interested in

What is the right way to use substitution method?

Kazeer [188]

Answer:

Step-by-step explanation:

Substitution method can be applied in four steps. Step 1: Solve one of the equations for either x = or y = . Step 2: Substitute the solution from step 1 into the other equation. Step 3: Solve this new equation Happy too help!

7 0

3 years ago

Help PLEASE!! I am on a time limit!

zimovet [89]

Answer:

Step-by-step explanation:

4 0

3 years ago

Need help finding the missing angle

Nutka1998 [239]

Answer:

The missing dimension is

$5$

Step-by-step explanation:

The Pythagorean Theorem states that

${a}^{2} + {b}^{2} = {c}^{2} \\$

Note that c is the hypothenus (the hypothenus is always opposite to the right angle of a triangle)

Therefore

${a}^{2} + {b}^{2} = {c}^{2} \\ {12}^{2} + {b}^{2} = {13}^{2} \\ 144 + {b}^{2} = 169 \\ {b}^{2} = 169 - 144 \\ {b}^{2} = 25$

$\sqrt{ {b}^{2} } = \sqrt{25} \\ b = 5$

Therefore the missing dimension is 5

7 0

3 years ago

A football player attempts to kick a football across a field. The path of the football can be modeled by the function h(x) = − 1

Nezavi [6.7K]

Answer:

Cristiano Ronaldo

Step-by-step explanation:

because he has a lot of shot power

7 0

3 years ago

Read 2 more answers

Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by

LuckyWell [14K]

C. 80 simulations would be the most likely to reproduce results predicted by probability theory. Due to the law of large numbers, as the number of trials increase, the actual ratio of outcomes will converge on the theoretical, or expected, ratio of outcomes.

6 0

3 years ago

Read 2 more answers