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2 years ago

NEED HELP ASAP NO LINKS AND NO JUST SAYING HI, PLEASE ANSWER LEGITIMATELY! THANK YOU!!!! <3

Mathematics

2 answers:

scoundrel [369]2 years ago

7 0

Answer: It's 42

Since 48 + 90 = 138

And because every triangle equals 180 all you gotta do is add 42

tia_tia [17]2 years ago

7 0

The measure of angle b (m∠b) is 42°

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I need help with writing a word problem that can be evaluated by the algebraic expression 372 + r, and evaluate it for r = 137.

Soloha48 [4]

Gabe had 372 apples and r grapes. The total of grapes and apples gabe has are 509. How many grapes did gabe have?

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3 years ago

Write in slope-intercept form an equation of the line that passes through

leva [86]

Step-by-step explanation:

m= (4-0)/(2-1)

y-int=1

y=mx+c

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2 years ago

Three times a number increased by ten equal to twenty less than six times a number . find the number

kiruha [24]

Answer:

the number is 10

Step-by-step explanation:

3x + 10 = 6x-20

20+10=6x-3x

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3 years ago

Read 2 more answers

Miguel has 225 baseball cards. He plans to keep 75 cards and give the rest to his friends.

jenyasd209 [6]

yes and no answer+the math:

1) yes
2) yes

1) so if you take 255-75 you get 180 now keep that in mind for number 2, when you divide 180 by 6 you will get 30 so we can give 30 cards to everyone

2) remember the 180? were using it again. if you do 180 and divide that by 4 you get 45 so we can give 45 cards to everyone.

hope this helps!

7 0

2 years ago

Read 2 more answers

Please help ! I’ll mark you as brainliest if correct.

deff fn [24]

Answer:

D = -87
Dx = 174
Dy = -435
Dz = 0
(x, y, z) = (-2, 5, 0)

Step-by-step explanation:

The determinant of the coefficient matrix is ...

$D=\left|\begin{array}{ccc}2&5&3\\4&-1&-4\\-5&-2&6\end{array}\right|\\\\=2(-1)(6)+5(-4)(-5)+3(4)(-2)-2(-4)(-2)-5(4)(6)-3(-1)(-5)\\\\=-12+100-24-16-120-15=\boxed{-87}$

The other determinants are found in similar fashion after substituting the constants on the right for each of the above matrix columns, in turn.

Those determinants are ...

$D_x=\left|\begin{array}{ccc}21&5&3\\-13&-1&-4\\0&-2&6\end{array}\right|=174$

$D_y=\left|\begin{array}{ccc}2&21&3\\4&-13&-4\\-5&0&6\end{array}\right|=-435$

$D_z=\left|\begin{array}{ccc}2&5&21\\4&-1&-13\\-5&-2&0\end{array}\right|=0$

The solutions are ...

x = 174/-87 = -2

y = -435/-87 = 5

z = 0

That is, (x, y, z) = (-2, 5, 0).

6 0

2 years ago