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guapka [62]
3 years ago
9

What is the scale factor​

Mathematics
1 answer:
jasenka [17]3 years ago
8 0

Answer:

Scale Factor is 7.

Step-by-step explanation:

Each value from the model collum is being multiplied by 7 to get the actual bridge length.

Hope this helped.

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One warehouse had 185 tons of coal, another one had 237 tons. The first warehouse delivered 15 tons of coal to its clients daily
lianna [129]

Answer:

In 9 days will the second warehouse have 1.5 times more coal than the first one

Step-by-step explanation:

The coal left in warehouses after x days can be found using the equation:

  • first warehouse: 185 - 15x
  • second warehouse= 237-18x

Let the second warehouse have 1.5 times more coal than the first one after n days then  

  1. 1.5 ×(185 - 15n)=237-18n  which gives:
  2. 277,5-22,5n=237-18n and
  3. 40,5=4,5n
  4. 9=n

7 0
3 years ago
Simplify the expression -3 + 1/3 x + (-4.5) - 1/5x
WITCHER [35]

Answer:

Step-by-step explanation:

-3 +\dfrac{1}{3}x - 4.5 -\dfrac{1}{5}x\\\\\\= -3 - 4.5 +\dfrac{1}{3}x - \dfrac{1}{5}x\\\\\\= - 7.5 + \dfrac{1*5}{3*5}x - \dfrac{1*3}{5*3}x\\\\\\= -7.5 +\dfrac{5}{15}x-\dfrac{3}{15}x\\\\\\= -7.5 + \dfrac{5-3}{15}x\\\\\\= -7.5 +\dfrac{2}{15}x

6 0
2 years ago
Read 2 more answers
Find the measure of
sergij07 [2.7K]

Answer:

∠ ABC ≈ 137.9°

Step-by-step explanation:

Using the Cosine rule in Δ ABC

cos B = \frac{a^2+c^2-b^2}{2ac}

with a = 89, b = 144, c = 65

cos B = \frac{89^2+65^2-144^2}{2(89)(65)} = \frac{7921+4225-20736}{11570} = \frac{-8590}{11570} , thus

B = cos^{-1} ( - \frac{8590}{11570} ) ≈ 137.9° ( to the nearest tenth )

4 0
3 years ago
I need help with this.....​
Hatshy [7]

Answer:

55 degrees

Step-by-step explanation:

4 0
3 years ago
What is the answer of a^2+b^2-(a-b)^2
Alex787 [66]
2b^2. This is because you have a positive a^2 and a negative so they cross it one another so it just leaves the b’s.
8 0
3 years ago
Read 2 more answers
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