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Vesna [10]
3 years ago
6

​you are taking a math course in which there will be four​ tests, each worth 100 points. you have scores of 89​, 93​, and 98 on

the first three tests. you must make a total of 360 in order to get an
a. what scores on the last test will give you an​ a?
Mathematics
1 answer:
sergij07 [2.7K]3 years ago
8 0

89+93+98 = 280

360 - 280 = 80 marks is needed for the last test

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Distrubutive property<br> (m-3)(-10)?
mrs_skeptik [129]

Answer: -10m + 30

Step-by-step explanation:

<u>Given expression</u>

(m - 3) (-10)

<u>Expand parentheses and apply the distributive property</u>

=m · (-10) - 3 · (-10)

<u>Simplify by multiplication</u>

=\boxed{-10m+30}

Hope this helps!! :)

Please let me know if you have any questions

4 0
3 years ago
Write an exponential function in the form y=ab^x that goes through points (0,7) and (5,1701).
Marizza181 [45]

Answer:

y = 7 3^{x}

Step-by-step explanation:

Use the given ordered pairs to find a and b

Using (0, 7 ), then

7 = a b^{0} ( b^{0} = 1 ), thus

a = 7

y = 7 b^{x}

Using (5, 1701 )

1701 = 7 b^{5} ( divide both sides by 7 )

243 = b^{5} ( take the fifth root of both sides )

b = \sqrt[5]{243} = 3 , thus

y = 7 3^{x}

3 0
3 years ago
The lengths of the sides of a triangle or an extended ratio 7 8 and 9 the perimeter of the triangle is 48 cm what are the length
julsineya [31]

Answer:

14cm, 16 cm, 18 cm

Step-by-step explanation:

Note that

= a:b: c = 7:8:9

We have to find the sum of the proportion

Sum of proportion = 7 + 8 + 9

= 24

Length of side a

7/24 × 48 = 14 cm

Length of side b

8 /24 × 48 = 16cm

Length of side a

9/24 × 48 = 18 cm

What are the lengths of the sides?

The lengths of the sides of the triangle in cm are

14cm, 16 cm, 18 cm

4 0
3 years ago
Alexis is making cookies. The recipe says that she has to mix 192 grams of sugar into the flour. Alexis knows that 1 cup of this
Dmitrij [34]
For this case we can make the following rule of three:
 1 cup ----------------> 128 grams
 x ----------------------> 192 grams
 From here, we clear the value of x.
 We have then:
 x = (192/128) * (1)
 x = 1.5
 x = 1 1/2
 Answer:
 
She needs about 1 1/2 cups.
4 0
3 years ago
Can somebody help please??? Explain... I need help with with this one problem:
LUCKY_DIMON [66]

Well - I mean. If every lunch costs $4 that means that the relationship should be linear.


You used to be able to draw graphs. But plot it out.

3 0
3 years ago
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