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3 years ago

13

The temperature in Hokkaido in Japan was -8 degrees at 24:00 one night. By 09:00 the temperature had risen 12 degrees. What was

the temperature at 9 am?

1 answer:

likoan [24]3 years ago

5 0

Answer:

4

Step-by-step explanation:

On a number line you will got to -8 and go up 12 and you would get 4

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Timmy and Ben shared a bag of marbles. Timmy had 3/4 of what Ben had. When Ben gave 36 marbles to Timmy, Ben had 1/3 of what Tim

Svetllana [295]

Let $t$ be the inital number of Timmy's marbles, and $b$ be the inital number of Ben's marbles.

At the beginning, "Timmy had 3/4 of what Ben had", which means

$t = \cfrac{3}{4}b \iff 4t=3b$

(I wrote the equation in an equivalent form to avoid denominators)

Then, Ben gives 36 marbles to Timmy. So, now Ben has $b-36$ marbles, and Timmy has $t+36$ marbles. The new ratio is 1 to 3 in Timmy's favour, so we have

$b-36 = \cfrac{t+36}{3} \iff 3(b-36) = t+36 \iff 3b-108 = t+36$

(same as before)

So, we have the following linear system:

$\begin{cases}4t=3b\\3b-108=t+36\end{cases}$

From the first equation we know that $3b=4t$ , so the second equation becomes

$4t-108=t+36 \iff 3t = 144 \iff t = \cfrac{144}{3} = 48$

Now that we know the value for $t$ , we can simply plug it into the first equation to get

$3b = 4\times 48 = 192 \iff b=\cfrac{192}{3} = 64$

3 0

3 years ago

You volunteer at an animal shelter on the weekends and today is adoption day! At the beginning of the event, you start with 44

Angelina_Jolie [31]

6 cats/kittens were adopted.

Step-by-step explanation:

Given,

Number of cats/kittens at the event = 44

Number of cats/kittens adopted = x

Number of cats/kittens returned = Twice returned as adopted = 2x

New total = 50

We will subtract the adopted and add the returned cats/kittens.

Total cats/kittens at event - adopted + returned = New total

$44-x+2x=50\\44+x=50\\x=50-44\\x=6$

6 cats/kittens were adopted.

Keywords: expression, variables

Learn more about variables at:

#LearnwithBrainly

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3 years ago

Isosceles Right Triangle Reflection to prove ASA Congruence

adell [148]

Answer:

Yes they went through rigid motion

Step-by-step explanation:

The original triangle is the same as the one on the left but the only thing that changed was its place(translation) making it a RIGID MOTION

7 0

3 years ago

Which statement describes a hexagon.

Aliun [14]

The answer is (c). The picture shows that all of the angles and sides are equal, meaning that it's both equilateral and equiangular.

5 0

3 years ago

A researcher was studying how the weights of horseshoe crabs along the East Coast vary between northern and southern habitats. I

Ronch [10]

Answer:

Option D (the weight of crab) would be the correct choice.

Step-by-step explanation:

In mathematics, the sum being analyzed depending on a variety of parameters, which have been calculated as explanatory variables, has become a response variable.
It is analogous with the utilization of the definition of variables of the study. A variable with an order to respond is categorized as either a dependent variable.

Some other preferences are not connected with the sustaining. So choice D is the right one.

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3 years ago