All categories

2 years ago

PLS HELP WILL MARK YOU BRAINLIEST, NO FAKE ANSWERS!!

Mathematics

1 answer:

Lisa [10]2 years ago

8 0

Answer:

1. if x + 5 = 12, then x = 7

:Subtraction property of equality

2. If x + y = 20, and y = 5, then x + 5 = 20.

:Substitution property of equality

3. If 2x3 = 11, then 11 = 2x - 3.

:Symmetric property of equality

You might be interested in

Solve -3(x+4) = 7x + 4

Nataliya [291]

Answer:

x = -8/5

Step-by-step explanation:

-3(x+4) -> -3x-12

-3x-12=7x+4

-7x

-10x-12=4

+12

-10x=16

16/-10 = -8/5

-8/5 = x

7 0

2 years ago

of all the students in class, 1/5 of them walk to school. What percent of students in the class walk to school

bagirrra123 [75]

Answer:

20%

Step-by-step explanation:

1/5 is the same as 2/10

2/10 is the same as 0.2

0.20 is the same as 20%

=) u got it!

7 0

3 years ago

Read 2 more answers

PLEASE HELP ASAP TRIGONOMETRY

otez555 [7]

Answer:

11). x = 25.8°

12). x = 67.3°

Step-by-step explanation:

11). By using sine rule in the given triangle,

cos(x) = $\frac{\text{Adjacent side}}{\text{Hypotenuse}}$

cos(x) = $\frac{27}{30}$

x = $\text{cos}^{-1}(\frac{9}{10} )$

x = 25.84

x ≈ 25.8°

12). By applying tangent rule in the given triangle,

tan(x) = $\frac{\text{Opposite side}}{\text{Adjacent side}}$

tan(x) = $\frac{43}{18}$

x = $\text{tan}^{-1}(\frac{43}{18} )$

x = 67.29°

x ≈ 67.3°

5 0

3 years ago

The school sold $6000 worth of tickets. Adult tickets were seven dollar and children’s tickets were three dollars. Three times a

padilas [110]

Answer:

1,500 tickets in total (375 adult tickets and 1,125 children tickets)

Step-by-step explanation:

Let x be the number of adult tickets sold.

Three times as many children tickets were sold as adults, so 3x is the number of children tickets sold.

Children tickets were three dollars, so 3x children tickets cost $\$3\cdot 3x=\$9x.$

Adult tickets were seven dollar, so x adult tickets cost $\$7\cdot x=\$7x.$

The school sold $6000 worth of tickets.

Hence,

$9x+7x=6,000\\ \\16x=6,000\\ \\x=\dfrac{6,000}{16}=375\\ \\3x=1,125\\ \\x+3x=375+1,125=1,500$

7 0

3 years ago

Seven less than the product of 24 and Jose’s savings

Liono4ka [1.6K]

Answer:

$24j -7$

Step-by-step explanation:

Given

$Savings \to$ j

Required

Express 7 less than 24 * j

First, we have:

$24 * j = 24j$

7 less is then expressed as:

$24j -7$

6 0

3 years ago