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aniked [119]
3 years ago
12

Use the expression below:

Mathematics
1 answer:
skelet666 [1.2K]3 years ago
7 0

Answer:

Part A: 8b -12c -16

Part B: 4(2b - 3c -4)

Part C: 36

Step-by-step explanation:

Part A:

5b + 3c - 20 + 3b - 15c + 4

= 8b -12c -16

Part B:

Factorising 8b -12c -16

= 4(2b - 3c -4)

Part C:

= 4[2(2)-3(-3)-4)]

= 4[4+9-4]

= 4[9]

= 36

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What is the equation of the line connecting (1,5) and (4,14)?
german
To find the slope of the line:
(y2-y1)/(x2-x1)
(14-5)/(4-1)=(9)/(3)=3

Only one of your 4 possible answers has 3 as a slope. However, plugging in each point into the y=mx+b equation, the y-intercept consistently comes out as 2..
y=mx+b
14=3(4)+b  b=2
5=3(1)+b    b=2
y=3x+2
If there is a consistent, positive slope (from your question, this does not seem to have a quadratic as an option), 3x+5 is not even a viable solution because x=1 when the y-value is 5 (and thus no other x value {0} could have a y-value of 5). It seems as though you have a typo on your hands. Hopefully this helps?
3 0
3 years ago
Mariyah bought 5 yards of fabric and a spool of thread for $22.75. If the spool of thread cost
Tems11 [23]

Answer:

$4.25

Step-by-step explanation:

Subtract the cost of the spool of thread from the total price:

22.75 - 1.50

= 21.25

Then, divide this by 5 to find the cost of fabric per yard:

= 4.25

So, the cost of the fabric per yard is $4.25

7 0
3 years ago
Read 2 more answers
(4/2)4 + (1 + 3)?<br><br> I really need help!
Katyanochek1 [597]

\huge\text{Hey there!}

\large\text{Just do PEMDAS}

\large\text{Parentheses}

\large\text{Exponents}

\large\text{Multiplication}

\large\text{Division}

\large\text{Addition}

\large\text{Subtraction}

\mathsf{(\dfrac{4}{2})(4) + (1+3)}

\mathsf{\dfrac{4}{2} = 2}

\mathsf{2(4) + (1 + 3)}

\mathsf{2(4) = 8}

\mathsf{8 + (1 + 3)}

\mathsf{1 + 3 = 4}

\mathsf{8 + 4 = 12}

\boxed{\boxed{\large\text{Answer: \bf \huge12 }}}\huge\checkmark

\text{Good luck on your assignment and enjoy your day! }

~\frak{Amphitrite1040:)}

6 0
3 years ago
5. Why is marine pollution a major problem?
andreyandreev [35.5K]

Answer:

Marine pollution is a major problem because it <em>endangers marine life that ingests the pollution which affects us when we eat fish or seafood, makes the ocean less safe for humans to swim in, and the ocean can't function the way it's meant to when unpolluted.</em>

6 0
3 years ago
Solve the formula thanks peeps
fenix001 [56]
P = 2b + 2c...subtract 2b from both sides
P - 2b = 2c ...divide both sides by 2
(P - 2b) / 2 = c
P/2 - b = c <=== ur answer is D
3 0
4 years ago
Read 2 more answers
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