All categories

3 years ago

Whats the value of x?

Mathematics

1 answer:

Anvisha [2.4K]3 years ago

5 0

Answer:

x=3

Step-by-step explanation:

both of the two sides equal the same so it would be 3x=9x-18

solve you get x=3

You might be interested in

Randall, Kira and Sean have 100 baseball cards altogether. Randall has twice as many as Kira and 10 more than Sean. How many bas

TEA [102]

Kira has 22 cards, Randall has 44 cards, and Sean has 34 cards

Solution:

Given that, Randall, Kira and Sean have 100 baseball cards altogether.

Randall has twice as many as Kira and 10 more than Sean.

We have to find how many baseball cards does each person have?

Now, let the number of cards with Kira be "n", then number of cards with Randall will be "2n"

As Randall has "2n" cards, Sean will have 2n – 10

Now, total cards = 100

Randall cards + Kira cards + Sean cards = 100

2n + n + 2n – 10 = 100

5n = 100 + 10

5n = 110

n = 22

So, kira has 22 cards, then, randall will have 2(22) = 44 cards and cards with sean = 44 – 10 = 34 cards.

Hence, kira has 22 cards, randall has 44 cards, and sean has 34 cards.

8 0

3 years ago

Solve. a - 6 > 1 I need help quick!

mariarad [96]

Answer: 8

Step-by-step explanation:

8-6 = 2 which is greater

anything above 7 is correct

7 0

3 years ago

Read 2 more answers

If you place a 39-foot ladder against the top of a 23-foot building, how many feet will

Alborosie

Answer:

31.5 ft

Step-by-step explanation:

Use the Pythagorean Theorem

a² + b² = c²

Plug in the knowns

a² + 23² = 39²

Subtract 23² from both sides

a² = 39² - 23²

a² = 1521 - 529

a² = 992

Take the square root of both sides

a = 31.496031496

Rounded

a = 31.5 ft

4 0

3 years ago

Read 2 more answers

The base of a triangle is 9 inches more than 3 times the height. if the area of the triangle is 105 square inches, find the base

wolverine [178]

So to solve you need to set up equations, Using h as the height. So the base is 9 inches more (+9) than 3 times the height (3h) so 3h+9 equals the base. You have the area so you need to plug in the equation for the base and h for height and divide it all by 2. h(3h+9)/2=105. after you solve that and get h by itself you should get h= 7 and the b= 30

4 0

3 years ago

SSHA scores Here are the scores on the Survey of Study Habits and Attitudes (SSHA) for 18 first-year college women:154 109 137 1

mihalych1998 [28]

Answer:

Women has better study habit than men.

Step-by-step explanation:

For knowing who has better study habits and attitudes toward learning we have to find the mean of both the women and men data.

The first step is that we only take first 18 values of both women(X) and men(Y) data, to make them of same length

Mean is used to measure the central tendency of data which represents the whole data in the best way. It can be found as the ratio of the sum of all the observations to the total number of observations.

Calculating all values:

$\bar{X}$ = 141.0556

$\bar{Y}$ = 121.25

Thus, women has better study habit than men. Since Mean of X is larger than Mean of Y.

5 0

3 years ago