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3 years ago

Your teacher will grade your response for question 11 to ensure that you receive proper credit for your answer.

Mathematics

1 answer:

madam [21]3 years ago

3 0

Answer:

Step-by-step explanation:

A rhombus has equal angles opposite

Opposite sides equal.

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Which of the following represents the factorization of the polynomial below x^2+9x+20

rusak2 [61]

Answer:

(x+5)(x+4)

Step-by-step explanation:

x^2+9x+20

Factor

What 2 numbers multiply to 20 and add to 9

5*4 = 20

5+4 =9

(x+5)(x+4)

5 0

3 years ago

Find the greatest possible error for the measurement 53.9 feet.

deff fn [24]

The greatest possible error is 0.5 feet

8 0

3 years ago

12. x + y = 4

34kurt

Answer:

$x = - \frac{2}{3} \: \: \: y = \frac{14}{3}$

Step-by-step explanation:

Since we know -7x=y we use the substitution method and plug it in the top equation.

$x + - 7x = 4$

$- 6x = 4$

$x = - \frac{4}{6}$

or x=-2/3

Then plug it back in the the bottom equation

$- 7( \frac { - 2}{3} ) = y$

y=14/3

3 0

3 years ago

in 2009 a total of R36 000 was invested in two accounts. One account earned 7% annual interest and the other earned 9% .The tota

Akimi4 [234]

a = amount invested at 7%

b = amount invested at 9%

we know the amount invested was ₹36000, thus we know that whatever "a" and "b" are, a + b = 36000. We can also say that

$\begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{7\% of a}}{\left( \cfrac{7}{100} \right)a}\implies 0.07a~\hfill \stackrel{\textit{9\% of b}}{\left( \cfrac{7}{100} \right)b}\implies 0.09b$

since we know the interest earned from the invested was ₹2920, then we say that 0.07a + 0.09b = 2920.

$\begin{cases} a + b = 36000\\\\ 0.07a+0.09b=2920 \end{cases} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{using the 1st equation}}{a + b = 36000\implies \underline{b = 36000-a}}~\hfill \stackrel{\textit{substituting on the 2nd equation}}{0.07a~~ + ~~0.09(\underline{36000-a})~~ = ~~2920} \\\\\\ 0.07a+3240-0.09a=2920\implies 3240-0.02a=2920\implies -0.02a=-320 \\\\\\ a=\cfrac{-320}{-0.02}\implies \boxed{a=16000}~\hfill \boxed{\stackrel{36000~~ - ~~16000}{20000=b}}$

5 0

2 years ago

PLS HELP ME I WILL MARK YOU AS BRAINLIEST!!!

natali 33 [55]

Answer:

Option B, 187.5 cm³

Step-by-step explanation:

Volume of the triangular prism,

base area × height

= (10×7.5/2)×5

= 187.5 cm³

4 0

3 years ago