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Vladimir79 [104]
3 years ago
8

4km in the ratio 9:4:7​

Mathematics
1 answer:
Black_prince [1.1K]3 years ago
8 0

Answer:

500km

Step-by-step explanation:

add all the proportions and then divide by 3. with conversion.

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A box has 1 red marble, 3 blue marbles, and 4 green marbles. Maya draws a blue marble randomly from the box, replaces it, and th
lakkis [162]

Answer:

the answer is 4

Step-by-step explanation:

1,3,and 4.....1+3+4=8

8÷2= 4

3 0
3 years ago
Evaluate x/y + 5 w^2, for x = 2/3 and y = 5/6, and w = 3
tresset_1 [31]
2/3 / 5/6 + 5 (3)^2

= 2/3 * 6/5 + 45

= 12/15 + 45  

= 45 4/5  Answer
5 0
4 years ago
Let fat be the explanatory variable and calories be the response variable; which scenario best describes ŷ = 121 + 1.42x?
emmasim [6.3K]

Using <u>linear function concepts</u>, it is found that the correct option is:

The amount of calories in a cheeseburger increases by 1.42 for every one gram of fat. The calorie amount estimated by this model is 121 if there are zero grams of fat.

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which represents by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0.

In this problem:

  • The explanatory variable fat is the input.
  • The response variable calories is the output.

The equation is:

y = 121 + 1.42x

  • The slope is of 1.42, which means that the amount of calories increases by 1.42 when the amount of fat increases by 1 gram.
  • The y-intercept is of 121, which means that if there are 0 grams of fat, there will be 121 calories.

Thus, the correct option is:

The amount of calories in a cheeseburger increases by 1.42 for every one gram of fat. The calorie amount estimated by this model is 121 if there are zero grams of fat.

A similar problem is given at brainly.com/question/16302622

8 0
2 years ago
No sé cómo hacerlo. Y me gustaría que me ayudaran con él proceso?
In-s [12.5K]

Answer:

BC=11

Step-by-step explanation:

we need to find BC

and we  know that

AB= x+2

AC=13

BC=2x+11

A, B and C are collinear

that means that

AB+BC=AC

x+2+2x+11=13

3x+13=13

3x=0

x=0

so BC=2(0)+11

BC=11

7 0
3 years ago
a line passes through the point (-10,9) and has a slope of -1/2 write a equation in slope-intercept form for this line
Olegator [25]

Answer:

\displaystyle y = -\frac{1}{2}x + 4

Step-by-step explanation:

9 = −½[−10] + b

5

\displaystyle 4 = b \\ \\ y = -\frac{1}{2}x + 4

I am joyous to assist you anytime.

4 0
3 years ago
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