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tiny-mole [99]
3 years ago
9

Please help will mark brainliest

Mathematics
1 answer:
PSYCHO15rus [73]3 years ago
4 0

Answer:

I think its the first 3 and last one

brainliest pls

Step-by-step explanation:

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HELP ASAP IM BEING TIMED! THANKS
Genrish500 [490]

Answer:The second

Step-by-step explanation:

8 0
3 years ago
Brianna evaluated the expressions 42+4 (6-2). Which number shows the correct solution.
TEA [102]

Answer:

58

Step-by-step explanation:

42+4(6-2) =

42+4(4) =

42+16 = <u>58</u>

3 0
3 years ago
Read 2 more answers
Let $P$ and $Q$ be constants. The graphs of the lines $x + 5y = 7$ and $15x + Py = Q$ are perpendicular and intersect at the poi
Marta_Voda [28]

Answer:

<em>(-3, -129)</em>

<em></em>

Step-by-step explanation:

Given

Two lines:

$x + 5y = 7$

$15x + Py = Q$

are perpendicular to each other and intersect at point (-8,3).

To find: (P, Q)

Solution:

The two lines intersect at (-8,3).

It means, the equation of line will be satisfied when we put value of x = -8 and y = 3

Putting in the second equation, we will get an equation in P and Q:

15\times (-8) + P \times 3 = Q\\\Rightarrow 3P = Q +120 ..... (1)

Given that two lines are perpendicular.

It means the product of their slopes will be equal to -1.

i.e. m_1\times m_2=-1

Slope of a line of the form ax+by+c=0 is given as:

m=-\dfrac{a}{b}

So, slopes of given lines are:

m_1=-\dfrac{1}{5}\\m_2=-\dfrac{15}{P}

Using the condition:

-\dfrac{1}{5}\times \dfrac{-15}{P}=-1\\\Rightarrow P = -3

Putting the value of P in equation (1):

\Rightarrow 3\times (-3) = Q +120 \\\Rightarrow Q = -9-120 = -129

So, answer is <em>(-3, -129)</em>

7 0
3 years ago
What’s -3 1/9 — (-5 5/9)
Svetradugi [14.3K]
-28/9-(-5 5/9)
-28/9-(50/9)
-28/9-50/9
22/9
= 2 4/9= 2.444444
hope this helps!
7 0
3 years ago
Read 2 more answers
A restaurant uses 33 pounds of pasta for a party of 14 people. If they are cooking pasta for a party of 5656 people, what should
Hoochie [10]
5656people(33lbs/14people)=13332 lbs  
4 0
3 years ago
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