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3 years ago

Laquita practiced 60 math facts. Kinman practiced 15 more facts than Laquita. How many math facts did they practice in all?

Mathematics

1 answer:

Afina-wow [57]3 years ago

5 0

Answer:

They practiced a total of 75 math facts in all!

60 + 15 = 75 :D

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What is the solution to the inequality -x/10>-11

Vladimir [108]

Answer:

x<110

Step-by-step explanation:

-x/10>-11

-x>-11*10

-x>-110

x>110

x<110

4 0

3 years ago

Read 2 more answers

If 25% of the students in elementary algebra courses receive a grade of A, and there are 300 students enrolled in elementary alg

djyliett [7]

Answer:

Total number of students receiving A grade = 75

Step-by-step explanation:

Total number of students enrolled in elementary algebra this year =300

Percentage of students receiving a grade of A = 25%

To find number of students that will receive a grade of A.

Solution:

In order to find the number of students that will receive a grade of A, we will find the percentage students receiving A grade of the total number of the student.

Number of students receiving A grade = $25\%\ of\textrm{ Total number of students}$

⇒ $25\%\ of\ 300$

Writing 25% as fraction and multiplying.

⇒ $\frac{25}{100}\times 300$

⇒ $\frac{7500}{100}$

⇒ $75$

∴ Total number of students receiving A grade = 75 (Answer)

6 0

3 years ago

Squares with sides of length x are cut out of each corner of a rectangular piece of cardboard measuring 23 ft by 13 ft. The resu

trapecia [35]

Answer:

Step-by-step explanation:

Given that rectangle has side length 23x13 feet.

When squares of side x are cut from all the four sides we have dimensions as

23-2x and 13-2x and height x

Volume $=x(23-2x)(13-2x)$

$=x(299-72x+4x^2)\\=299x-72x^2+4x^3$

Use derivative test

First derivative V'(x) $V'(x)= 299-144x+12x^2\\V"(x) = -144+24x$

Equate I derivative to 0

We get approximate value of x = 2.671, 9.329

Since width is 13 feet it cannot be 9.329

Hence x = 2.671

V"(x) = -80 <0

So maximum volume is

$299x-72x^2+4x^3\\=299(2.671)-72(2.671)^2 +4(2.671)^3\\\\=361.186$

5 0

3 years ago

A ball is shot from a cannon into the air with an upward velocity of 65 ft/sec. The equation that gives the height (h) of the ba

Sveta_85 [38]

Answer:

Step-by-step explanation:

Find AOS

X = -b/2a

X = -65/2(-14)

X = -65/-28

X = 2.32 secs

t = 2.32secs

A) y value when t = 2.32 is the maximum height.

Substitute t in the equation.

h(t)= -14t^2+65t+1.75

h(t)= (-14 * 2.32²) + (65 * 2.32) + 1.75

= (-14 * 5.38 ) + (65 * 2.32) + 1.75

= -75.35 + 150.8 + 1.75

= 77.2 ft

Maximum height attained by the ball = 77.2 ft

B) Time the maximum height achieved = 2.32secs

C) The ball off of the ground when it was shot is well t = 0

Substitute t in equation

h(t)= -14t^2+65t+1.75

h(0)= (-14 * 0²) + (65 * 0) + 1.75

= 0 + 0 + 1.75ft

The ball is 1.75ft off the ground when it was shot.

7 0

4 years ago

HELP RIGHT NOW!!! PLEASE VERY EASY!

BigorU [14]

Answer:

30 in^2

Step-by-step explanation:

get sides: 15, 18

multiply sides by 1/3: 5, 6

get area of square: 5*6= 30

5 0

3 years ago