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julia-pushkina [17]
3 years ago
9

If a = 4 and b = 3 what is the value of 3a -

b^{2}" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
liberstina [14]3 years ago
5 0
3(4) - (3)^2
12 - 9
3
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What is the slope of the line shown in the graph?
stira [4]
Y= f(x)= ax+b
when x= -1, y= -1
-1= -a+b   | * ( -1)

when x= -3, y=2
2= -3a+b

-3a+b= 2
a -  b=  1
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2a=3
a=3/2   is the slope


7 0
2 years ago
Solve the equation. 2(3x – 5) = 8
stiks02 [169]

You would distibute first distribute

6x-10=8

add 10 on both sides

6x=18

Then you divide 6 on both sides to get x by itself so

x=3

4 0
3 years ago
Mandy and her mom are making homemade play-dough. Besides the flour, the recipe calls for 1/4 cup of salt for every 3/4 cup of w
prisoha [69]

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about a half teaspoon

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2 years ago
6)<br> Solve.<br> x + 5 = 10<br> A)<br> x = 2<br> B)<br> x = 3<br> 09<br> x = 4<br> D)<br> X = 5
LenaWriter [7]
D is the correct answer
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4 0
3 years ago
Which of the following sets of lengths can Sean use to make a right triangle?
Aleks [24]

Answer:

{8 cm, 15 cm, 17 cm}

Step-by-step explanation:

we know that

The length sides of a right triangle must satisfy the Pythagoras Theorem

so

c^2=a^2+b^2

where

c is the greater side (the hypotenuse)

a and b are the legs (perpendicular sides)

<u><em>Verify each case</em></u>

case 1) we have

{5 cm, 15 cm, 18 cm}

substitute in the formula

18^2=5^2+15^2

324=250 ----> is not true

therefore

Sean cannot make a right triangle with this set of lengths

case 2) we have

{6 cm, 12 cm, 16 cm}

substitute in the formula

16^2=8^2+12^2

256=208 ----> is not true

therefore

Sean cannot make a right triangle with this set of lengths

case 3) we have

{5 cm, 13 cm, 15 cm}

substitute in the formula

15^2=5^2+13^2

225=194 ----> is not true

therefore

Sean cannot make a right triangle with this set of lengths

case 4) we have

{8 cm, 15 cm, 17 cm}

substitute in the formula

17^2=8^2+15^2

289=289 ----> is true

therefore

Sean can make a right triangle with this set of lengths

6 0
2 years ago
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