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3 years ago

Use benchmarks to estimate 2.81 + 3.72

Mathematics

2 answers:

Lina20 [59]3 years ago

8 0

I am guessing it's seven because 2.81 rounds to 3 and 3.72 rounds to 4. So 3+4=7

jeyben [28]3 years ago

3 0

Because 2.81 rounded to the nearest benchmark is 3, and 3.72 rounded to the nearest benchmark is 3.5, and 3 plus 3.5 is 6.5

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Raymond developed an app for smartphones. During the first week, he had 7,040 downloads from girls and 3 times as many downloads

myrzilka [38]

Answer:

The correct calculation is D. 7,040 × 3, then 21,120 ÷ 8

Step-by-step explanation:

1. Let's review the information provided to us to answer the question correctly:

Number of downloads from girls = 7,040

Number of downloads from boys = 3 times as many

Number of boys who downloaded and paid the full version = 1 out of 8

2. Which calculation yields the number of boys who bought the full version of the app?

Number of downloads from boys = 3 * 7,040

Number of downloads from boys = 21,120

Number of boys who downloaded and paid the full version = 21,120/8 = 2,640

The correct calculation is D. 7,040 × 3, then 21,120 ÷ 8

8 0

3 years ago

Given the following equation, what is the value of x? *

Luda [366]

Answer:

x=17

Step-by-step explanation:

Sin and cos are complementary angles, they both add. up to form 90 degrees.

$\sin(x) = \cos(y)$

where x+y=90

$3x + 1 + 2x + 4 = 90$

$5x + 5 = 90$

$5x = 85$

$x = 17$

3 0

3 years ago

Answer this! Solve the inequality. - 3x + 6 > -2

Vinil7 [7]

1 ) Subtract 6 from both sides .

-3x > -2 - 6

2) simplify -2 - 6 to -8.

-3x > -8

3) Divide both sides by -3

x < -8/-3

4)two negatives make a positive

x < 8/3

4 0

4 years ago

WRITE THE EQUATION BELOW IN SLOPE-INTERCEPT FORM; 14x=6Y-12

valentinak56 [21]

The sllope-intercept form:

$y=mx+b$

$6y-12=14x$ add 12 to both sides

$6y=14x+12$ divide both sides by 6

$y=\dfrac{14}{6}x+\dfrac{12}{6}\\\\\boxed{y=\dfrac{7}{3}x+2}$

5 0

3 years ago

Find a • b.

melamori03 [73]

That is about coordinates and the dot product
we have a has coordinates (4;8)
and b has coordinates (-2;3)
So we have a.b= 4x(-2)+ 8x3= -8+24=16
The answer is 16

6 0

3 years ago