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ExtremeBDS [4]
2 years ago
14

What is ,- 7 ≤ 2a + 7 ≤ 23

Mathematics
2 answers:
amm18122 years ago
8 0
To solve a compound inequality, separate it into two inequalities-
2a + 7>-7
2a +7<23

Solve the inequality-
a>-7
a<8

Find the intersection-
a ∈[-7,8]
Nezavi [6.7K]2 years ago
7 0

Answer:

−7≤a≤8

Step-by-step explanation:

Here's a quick step by step hope this helps!

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A lorry driver charges $1800 to carry 60 tonnes of weight. How much will he charge for carrying 80 tonnes at the same rate
V125BC [204]

Answer:

$2400

Step-by-step explanation:

60 tonnes = $1800

80 tonnes = $?

= 1800 × 80/60

= $2400

4 0
3 years ago
Read 2 more answers
5 -2x + 6y= -38<br> ? 3x – 4y = 32<br> •(-4, - 5)<br> •(-5, 4)<br> •(1, – 6)<br> (4, - 5)
Svet_ta [14]

Answer:

Option D (4, -5)

Step-by-step explanation:

This question can be solved by various methods. I will be using the hit and trial method. I will plug in all the options in the both the given equations and see if they  balance simultaneously.

Checking Option 1 by plugging (-4, -5) in the first equation:

-2(-4) + 6(-5) = -38 implies 8 - 30 = -38 (not true).

Checking Option 2 by plugging (-5, 4) in the first equation:

-2(-5) + 6(4) = -38 implies 10 + 24 = -38 (not true).

Checking Option 3 by plugging (1, -6) in the second equation:

3(1) - 4(-6) = 32 implies 3 + 24 = 32 (not true).

Since all the options except Option 4 have been ruled out, therefore, (4,-5) is the correct answer!!!

7 0
3 years ago
Which models show 60%? Check all that apply.
goldfiish [28.3K]

Answer:

OPTION A AND B.

AS OPTION A IS 3/5=6/10=60%

Option C=60/100=60%

6 0
3 years ago
Read 3 more answers
A group of children share 11 3/7 vegetarian pizzas. Each child receives 10/14 of a pizza. How many children are in the group
7nadin3 [17]
8 children because
11 3/7 is equal to 83/14
If each child receives 10/14
83/10
= 8.3
There can't be .3 of a child so round it and you get 8!
Hope this helps!
5 0
3 years ago
A jar has 15 pink gumballs, 22 green gumballs, 19 red gumballs, and 19 yellow gumballs. Which colored gumball has the greatest p
Phoenix [80]

Answer:

green

Step-by-step explanation:

the one with the most gumballs compared to the other colors is the most likely

7 0
3 years ago
Read 2 more answers
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