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svetlana [45]
3 years ago
12

2(4-6+1)=-5+ 8:4 = What’s the answer

Mathematics
1 answer:
allochka39001 [22]3 years ago
8 0

Step-by-step explanation:

First you do the one in the parentheses: 4 - 6 = -2

Then you got the answer: -2

Then you add -2 + 1 = -1

You got the answer: -1

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Mary and Gary had some stickers in the ratio 5:3. After Mary had given 1/3 of her stickers to Gary, the new ratio of the number
polet [3.4K]

The total number of stickers the 2 children had was 192 stickers.

Let x represent Mary initial stickers, y represent Gary initial stickers and z represent the total stickers.

x + y = z

  • x + y - z = 0     (1)

They shared in the ratio of 5:3, hence:

x = (5/8)z

  • 8x - 5z = 0      (2)

Mary gives 1/3 of her stickers to Gary to have 32 more stickers than her.

(1/3)x = (1/3)(5/8)z = (5/24)z

y + (1/3)x = (2/3)x + 32

  • y - (1/3)x = 32    (3)

Solving equation 1, 2 and 3 gives:

x = 120, y = 72, z = 192

The total number of stickers the 2 children had was 192 stickers.

Find out more on equation at: brainly.com/question/13763238

6 0
2 years ago
Which equation does not represent a direct variation?
tatuchka [14]
Okay I think there has been a transcription issue here because it appears to me there are two answers. However I can spot where some brackets might be missing, bear with me on that.

A direct variation, a phrase I haven't heard before, sounds a lot like a direct proportion, something I am familiar with. A direct proportion satisfies two criteria:

The gradient of the function is constant s the independent variable (x) varies

The graph passes through the origin. That is to say when x = 0, y = 0.

Looking at these graphs, two can immediately be ruled out. Clearly A and D pass through the origin, and the gradient is constant because they are linear functions, so they are direct variations.

This leaves B and C. The graph of 1/x does not have a constant gradient, so any stretch of this graph (to y = k/x for some constant k) will similarly not be direct variation. Indeed there is a special name for this function, inverse proportion/variation. It appears both B and C are inverse proportion, however if I interpret B as y = (2/5)x instead, it is actually linear.

This leaves C as the odd one out.

I hope this helps you :)
4 0
4 years ago
How does lack of sleep affect risk of injury?
prohojiy [21]

Answer:

D. It interferes with motor responses

Step-by-step explanation:

Don't ask why I know this

8 0
3 years ago
A line passes through the point (4, –2) and has a slope of One-half.
dalvyx [7]

Answer:

-6

Step-by-step explanation:

6 0
3 years ago
In a freefall skydive, a skydiver begins at an altitude of 10,000 feet. during a freefall, the skydiver drops toward earth towar
asambeis [7]

Answer:

{t|0\leq t\leq 50}

Step-by-step explanation:

We are given that

In a freefall skydive, a skydiver begins at an altitude during free fall =10,000 feet

The skydiver drops towards earth at a rate=175 ft/s

The height of the skydiver from the ground can be modeled using the function

H(t)=10000-175t

We have to find the domain of the function for this situation.

When t=0

Then ,H(0)=10,000 feet

From given graph we can see that the value of t  lies  from 0 to 50.

Therefore, the domain of the function for this situation is given by

{t|0\leq t\leq 50}

7 0
3 years ago
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