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4 years ago

Can someone help me with this question please.

Mathematics

2 answers:

kifflom [539]4 years ago

8 0

The answer would most defiantly be “21”, choice c “21”

photoshop1234 [79]4 years ago

8 0

Answer:

Step-by-step explanation:

The formula for triangular numbers is n×(n+1)÷2 (n is the step of next number)

we have 1, 3, 6, 10, 15 so the next step would be 6th

6×(6+1)÷2 = 21

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What is the solution to the equation? 4x - 8 = 16 need this at least by tomorrow! thank you!

Gelneren [198K]

Answer:

x = 6

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Step-by-step explanation:

Step 1: Define Equation

4x - 8 = 16

Step 2: Solve for x

Add 8 to both sides: 4x = 24
Divide 4 on both sides: x = 6

Step 3: Check

Plug in x into the original equation to verify it's a solution.

Substitute in x: 4(6) - 8 = 16
Multiply: 24 - 8 = 16
Subtract: 16 = 16

Here we see that 16 does indeed equal 16.

∴ x = 6 is the solution to the equation.

5 0

3 years ago

Read 2 more answers

5. A markup of 30% on cost is equivalent to a 41% markup on selling price, True False

aivan3 [116]

Answer:

false

Step-by-step explanation:

cost and selling price are the same thing so there would be no difference in percentage

8 0

3 years ago

The graph of g(x) = -x^2 is shifted 3 units left and 1 unit up. If this new graph is f(x), then what is the value of f(-1.5)

kondor19780726 [428]

$\bf \qquad \qquad \qquad \qquad \textit{function transformations}
\\ \quad \\\\
% left side templates
\begin{array}{llll}
f(x)=&{{ A}}({{ B}}x+{{ C}})+{{ D}}
\\ \quad \\
y=&{{ A}}({{ B}}x+{{ C}})+{{ D}}
\\ \quad \\
f(x)=&{{ A}}\sqrt{{{ B}}x+{{ C}}}+{{ D}}
\\ \quad \\
f(x)=&{{ A}}(\mathbb{R})^{{{ B}}x+{{ C}}}+{{ D}}
\\ \quad \\
f(x)=&{{ A}} sin\left({{ B }}x+{{ C}} \right)+{{ D}}
\end{array}\\\\
--------------------\\\\$

$\bf \bullet \textit{ stretches or shrinks horizontally by } {{ A}}\cdot {{ B}}\\\\
\bullet \textit{ flips it upside-down if }{{ A}}\textit{ is negative}\\
\left. \qquad \right. \textit{reflection over the x-axis}
\\\\
\bullet \textit{ flips it sideways if }{{ B}}\textit{ is negative}\\
\left. \qquad \right. \textit{reflection over the y-axis}$

$\bf \bullet \textit{ horizontal shift by }\frac{{{ C}}}{{{ B}}}\\
\left. \qquad \right. if\ \frac{{{ C}}}{{{ B}}}\textit{ is negative, to the right}\\\\
\left. \qquad \right. if\ \frac{{{ C}}}{{{ B}}}\textit{ is positive, to the left}\\\\
\bullet \textit{ vertical shift by }{{ D}}\\
\left. \qquad \right. if\ {{ D}}\textit{ is negative, downwards}\\\\
\left. \qquad \right. if\ {{ D}}\textit{ is positive, upwards}\\\\
\bullet \textit{ period of }\frac{2\pi }{{{ B}}}$

with that template in mind, let's see.

to the left by 3 units, C = +3
up by 1 unit, D = 1

$\bf g(x)=-x^2\\\\\\ g(x)=-1(1x+\stackrel{C}{0})^2+\stackrel{D}{0}\implies g(x)=-1(1x+3)^2+1
\\\\\\
g(x)=-(x+3)^2+1\impliedby f(x)\qquad \qquad f(-1.5)=-[(-1.5)+3]^2+1$

and surely you know how much that is.

5 0

4 years ago

This table shows the top athletes that play both football and basketball. What is the intersection of the set of football player

Yuki888 [10]

Answer:

the answer is {Corelli, Yao}

Step-by-step explanation:

i took the quiz

4 0

3 years ago

Combine like terms in the expression below. 5c + 6 + 8c - 2 Plz help

Eva8 [605]

Answer:
13c+6-2

Explanation:
You combine the amount of cs with each other.

8 0

3 years ago