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Arte-miy333 [17]
3 years ago
15

Linear equations 3(−5x+4)+5x−1=−39 Please help

Mathematics
1 answer:
Ivahew [28]3 years ago
6 0

Answer:

Step-by-step explanation:

3(-5x+4)+5x-1=-39

-15x+12+5x-1=-39

-10x+11=-39

      -11    -11

-10x=-50

-10x/-10  -50/-10

x=5

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This is like super confusing so if you could figure it out that would be great thanks!
Troyanec [42]

Answer:

C

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Lightning strikes the earth more than 60 times per second. How many times would it strike in 3 minutes 15 seconds
Artist 52 [7]

Answer: 11,700 times

Step-by-step explanation:

First find the number of seconds in 3 minutes 15 seconds.

Each minute is 60 seconds so 3 minutes would be:

= 3 * 60

= 180

Add the 15:

= 195 seconds

Lightning strikes more than 60 times per second so we shall use 60 times

= 60 * 195

= 11,700 times

8 0
3 years ago
Nathan participated in a 5k race. He walked 1/4 of the way , jogged 3/5 of the way , and run 3/20 of the way
marishachu [46]

Answer:

4.25 km (See Below)

Step-by-step explanation:

<em>The question is:</em>

<em>How many kilometers did Nathan walk and jog?</em>

<u>Solution:</u>

He walked 1/4th of 5 kilometer race

He jogged 3/5th of 5 kilometers race

Rest, he ran.

We need total km he ran and jog. That is (1/4) + (3/5)th:

\frac{1}{4}+\frac{3}{5}=\frac{5+3(4)}{20}=\frac{17}{20}

So, we find 17/20th of 5, which is:

\frac{17}{20}*5=4.25

So, Nathan walked and jogged 4.25 km of the race.

4 0
3 years ago
(Solving for a). b=(4*a)-3/4
Andrei [34K]

Answer:

a = 3/28

Step-by-step explanation:

<em>To start solving for a variable, you need to isolate it.</em>

-4/3b = 4a

<em>-4/3 divided by 4 equals -4/12 or </em><em>-1/3</em>

a = -1/3b

<em>To completely solve for </em><em>a</em><em> we need to plug it back in and solve for </em><em>b</em><em>.</em>

b = (4(-1/3b)) - 3/4

b = -4/3b - 3/4

7/3b = -3/4

b = -9/28

<em>Finally, we can plug </em><em>b</em><em> back in to the previous equation we got for </em><em>a</em><em> to solve for </em><em>a</em><em>.</em>

a = -1/3(-9/28)

a = 3/28

<em>Furthermore, we can check if this is correct by plugging in </em><em>3/28</em><em> for </em><em>a</em><em> into the original problem and see if we get what we got for </em><em>b</em><em> (</em><em>-9/28</em><em>)</em>

8 0
3 years ago
4. The cost of pizzas at two different shops is shown in the graph and table
ruslelena [56]

Answer:

I am not too sure but i think 6+5=11

Step-by-step explanation:

where 6 comes first then 11 comes second and that equals 11

7 0
3 years ago
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