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3 years ago

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For a science experiment, Claudia observes the effects of temperature on a substance. The original temperature is 9°C, and Claud

ia increases the temperature by 2°C each hour. Then Claudia graphs the relationship between time and temperature. What is the y-intercept of Claudia’s graph and what does it represent?

1 answer:

aliya0001 [1]3 years ago

5 0

Answer:

The drop in temperature is 42-(-54)=42+54=96℉. Rate of drop is 12℉. So it will take 96/12=8 hours.

Another way: -54-42=-96, -96/-12=8 hours.

Step-by-step explanation:

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Inga [223]

Answer:

3.75 quarts, rounded to 3.8 quarts

Step-by-step explanation:

3 quarts of solution is 10% antifreeze, so 0.3 quarts are already antifreeze, and 2.7 quarts are not.

a(the antifreeze we already have)+x(what we're going to add)= 1.5*2.7

Let me explain. If we have 60% antifreeze, 40% is not. 60/40=1.5

Substitute a for 0.3

0.3+x=4.05 Subtract 0.3 from both sides

x=3.75

7 0

2 years ago

Just number nine please

nlexa [21]

My dude its 9 brubh ni99a isis

4 0

3 years ago

Need to find the missing length and round to nearest tenth. I'm a bit confused.

astraxan [27]

ANSWER

15.9

EXPLANATION

Given:

A right-triangle with two sides and an angle

Desired Outcome:

The value of x

Apply the SOH CAH TOA rule

$\begin{gathered} tan\theta=\frac{x}{34} \\ x=34\times0.4663 \\ x=15.8544 \end{gathered}$

Hence, the value of x is 15.9 (rounded to the nearest tenth).

5 0

1 year ago

<img src="https://tex.z-dn.net/?f=2%2Bx%3D11" id="TexFormula1" title="2+x=11" alt="2+x=11" align="absmiddle" class="latex-formul

nekit [7.7K]

Answer:

$x = 9$

Step-by-step explanation:

$2 + x = 11$

$x = 11 - 2$

$x = 9$

<h3>Hope it is helpful....</h3>

7 0

2 years ago

Can someone help me out with this please? I suck at fractions

xxMikexx [17]

164 inches x $\frac{1 foot}{12 inches}$ = $\frac{41}{3}$ ft

147 inches x $\frac{1 foot}{12 inches}$ = $\frac{49}{4}$ ft

2 $\frac{1}{4}$ ft = $\frac{9}{4}$

Perimeter = 2L + 2w - 1doorway

= 2 $(\frac{41}{3})$ + 2( $(\frac{49}{4})$ - $\frac{9}{4}$

= $\frac{82}{3}$ + $\frac{98}{4}$ - $\frac{9}{4}$

= $\frac{82}{3}$ + $\frac{89}{4}$

= $(\frac{4}{4} )$ $\frac{82}{3}$ + $(\frac{3}{3} )$ $\frac{89}{4}$

= $\frac{328}{12}$ + $\frac{267}{12}$

= $\frac{595}{12}$

= 49 $\frac{7}{12}$ ft

******************************************************************************

b) 49 $\frac{7}{12}$ ft ÷ 8ft = 6.2

7 boards need to be purchased

5 0

3 years ago