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3 years ago

8

write a problem that can be modeled by the equation 2x 40=60. then the solve the equation and explain the solution in the contex

t of the problem

1 answer:

elixir [45]3 years ago

5 0

<span>A tutor charges $40 plus $2/minute to do algebra homework.
Cost = 2*x + 40, where x is the number of minutes.
</span>

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The blades of a windmill turn on an axis that is 35 feet above the ground. The blades are 10 feet long and complete two rotation

7nadin3 [17]

<span>It could be C. If the blade spends twice in a minute, it would be 30 seconds. 30=2pi/B=pi/15. </span>

6 0

2 years ago

Read 2 more answers

Write 70 20 in lowest terms.

Harlamova29_29 [7]

Answer: Find the GCD (or HCF) of numerator and denominator. GCD of 70 and 20 is 10.

70 ÷ 1020 ÷ 10.

Reduced fraction: 72. Therefore, 70/20 simplified is 7/2.

5 0

3 years ago

How do I solve -3(3+x)+(x-6)=-4 ?

zysi [14]

$\huge\boxed{x=-\frac{11}{2}}$

Start by distributing the $-3$ to the $(3+x)$ . $-3(3) + (-3)(x) + (x-6) = -4$

Multiply and simplify. $-9-3x+(x-6)=-4$

Rearrange the terms. $-3x+x-9-6=-4$

Combine like terms. $-2x-15=-4$

Add $15$ on both sides. $-2x=11$

Divide both sides of the equation by $-2$ . $x=\boxed{-\frac{11}{2}}$

7 0

2 years ago

A study of the relationship between age and various visual functions (such as acuity and depth perception) reported the followin

Mila [183]

Answer:

Σxi =56.61

Σxi²=196.23

Step-by-step explanation:

X be the random variable represents area of scleral lamina (mm2) from human optic nerve heads

Σxi can be obtain by adding all x values

Σxi=2.79+2.53+2.78+3.79+2.33+2.72+3.88+4.15+3.79+4.43+3.47+4.47+2.5+3.61+2.77+3.53+3.07=56.61

Σxi =56.61

Σxi² can be obtained by squaring x values and then adding them.

Σxi²=2.79²+2.53²+2.78²+3.79²+2.33²+2.72²+3.88²+4.15²+3.79²+4.43²+3.47²+4.47²+2.5²+3.61²+2.77²+3.53²+3.07²=196.233

Σxi²=196.23

8 0

2 years ago

Sara and Tatiana both buy ice cream over the weekend. Sara goes to the corner store and buys 7 pints of ice cream for $20 .Tatia

HACTEHA [7]

Answer:

Step-by-step explanation:

There are 2 cups in 1 pint.

Sara gets 2 * 7 = 14 cups

She pays 20 dollars.

Tatiana buys 15 1/2 cups for 20 dollars. In effect, Tatiana got 1.5 cups free, so she got the better deal.

3 0

3 years ago