3 years ago

Which expression has a value of −10?

Mathematics

1 answer:

igomit [66]3 years ago

8 0

Answer:

Step-by-step explanation:

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The equation y = 0.25x + 50 gives the cost y of renting a car if the car is driven x miles

iogann1982 [59]

C. $112.50

y=0.25x+50

x = 250 miles

0.25*250=62.50

62.50+50= $112.50

3 0

3 years ago

Read 2 more answers

20 points, pls help, its angles

Zina [86]

Okay what’s the question

3 0

2 years ago

olga nikolaevna [1]

Answer:

Fraction of the original board left = $\frac{2}{15}$

Step-by-step explanation:

Let the length of the board is = l feet

Marty saws off $\frac{1}{5}$ of a wooden board.

Length of the board left = l - $(\frac{1}{5})l$

= $(\frac{4}{5})l$ feet

He saws off $\frac{3}{4}th$ of the remaining board,

Board left = $(\frac{4}{5})l-[(\frac{4}{5})l\times (\frac{3}{4})]$

= $\frac{4}{5}l-\frac{3}{5}l$

= $\frac{1}{5}l$ feet

He finally saws off $\frac{1}{3}$ rd of the remaining board.

Board left = $\frac{1}{5}l-[\frac{1}{5}\times \frac{1}{3}]l$

= $(\frac{1}{5}-\frac{1}{15})l$

= $\frac{2}{15}l$ feet

Fraction of the original board left = $\frac{\frac{2}{15}l}{l}$

= $\frac{2}{15}$

6 0

3 years ago

Evaluate -3x² + 4x-2 for x = 2.<br> A. -2<br> B. -1<br> C. -6<br> D. 18

kobusy [5.1K]

Answer:

C. -6

Step-by-step explanation:

-3(2)²+4(2)-2

-3(4) + 8 - 2

-12+8-2

-14+8

-6

5 0

2 years ago

An English instructor asserted that students' test grades are directly proportional to the amount of time spent studying. Lisa

Nady [450]

$\bf \begin{array}{ccll}
hours&score\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
9&72\\
h&95
\end{array}\implies \cfrac{9}{h}=\cfrac{72}{95}\implies \cfrac{9\cdot 95}{72}=h$

5 0

3 years ago