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andreyandreev [35.5K]
2 years ago
6

A golfer observed that 2 out of every 3 balls she hit landed near the hole. If she hits 72 shots, approximately how many times w

ill her ball land near the hole?
Mathematics
1 answer:
kotegsom [21]2 years ago
5 0

9514 1404 393

Answer:

  48

Step-by-step explanation:

About 2/3 of her 72 shots will land near the hole.

  2/3 × 72 = 48

Her ball will land near the hole approximately 48 times.

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Mark studies a group of 30 whales. If each whale weighed approximately 3.8 x 105 pounds, find the total weight of all 30 whales.
Yakvenalex [24]

Answer:

= 1.14 \times 10^{7}pounds

Step-by-step explanation:

If each whales weighed

3.8 \times  {10}^{5}

Then 30 whales weighed

30 \times 3.8 \times  {10}^{5}

=114 \times {10}^{5}

= 1.14 \times 10^{2}  \times {10}^{10}

Applying the law of indices we obtain

= 1.14 \times 10^{(2+ 5)}

=1.14 \times 10^{7}pounds

6 0
3 years ago
PLEASE HELP ME IM DESPERATE ​
Andrews [41]

Answer:

y = - \frac{1}{2} x - 3

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = - \frac{1}{2} , thus

y = - \frac{1}{2} x + c ← is the partial equation

To find c , substitute (4, - 5) into the partial equation

- 5 = - 2 + c ⇒ c = - 5 + 2 = - 3

y = - \frac{1}{2} x - 3 ← equation of line

3 0
2 years ago
Need help ASAP Tysm! :))
Mrrafil [7]

Answer:

The answer is -86

Step-by-step explanation:

-7 squared is 49

49 × 2 = 98

12-98= -86

4 0
3 years ago
Put the following equation in standard form and determine the quadratic, linear, and constant coefficients. -3x2 - 8 = 5x - 7
marusya05 [52]

Answer:

  • -3x² -5x -1 = 0
  • -3 (quadratic)
  • -5 (linear)
  • -1 (constant)

Step-by-step explanation:

The equation will be in standard form when terms are listed in order of decreasing degree, and the right side of the equation is 0.

<h3>Standard form</h3>

We can subtract the right-side expression from both sides to get standard form.

  -3x² -8 -(5x -7) = 5x -7 -(5x -7)

  -3x² -8 -5x +7 = 0 . . . . . . . simplify a bit

  -3x² -5x -1 = 0 . . . . . . . . . collect terms

The standard form equation can be written ...

  -3x² -5x -1 = 0

<h3>Coefficients</h3>

The quadratic coefficient is the coefficient of the term with degree 2. The quadratic coefficient is -3.

The linear coefficient is the coefficient of the term with degree 1. The linear coefficient is -5.

The constant coefficient is the coefficient of the term with no variables. The constant is -1.

__

<em>Additional comment</em>

We can make the leading coefficient positive by multiplying the equation by -1. This gives ...

  3x² +5x +1 = 0

with quadratic, linear, and constant coefficients 3, 5, 1.

This is a legitimate answer to this question. In the case of linear equations, the "standard form" has the constant on the right side of the equal sign, and the leading coefficient is required to be positive. A negative leading coefficient can sometimes lead to errors (when the sign is overlooked), so having a positive leading coefficient is often preferred.

8 0
2 years ago
Two supplementary angles have a ratio of 4:5 what is the measure of the larger angle?​
Mila [183]

Answer:

100°

Step-by-step explanation:

Supplementary means the sum of the angles is 180°

so we add 4+5 = 9

180/9 = 20

20 now we multiply according to the ratio

20x4:20x5

80:100

the measure of the largest is 100°

4 0
2 years ago
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