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2 years ago

3

Mathematics

1 answer:

disa [49]2 years ago

5 0

Answer:

20.7

20.23

20.22

20.102

20.005

Step-by-step explanation:

hope this helps!

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Which equation is true?

amm1812

D is the answer
(4+8)+1 = 13
4+(8+1) = 13
Therefore equation D is true

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2 years ago

Slade draws triangle PQR. He then constructs a perpendicular bisector from vertex P that intersects side QR at point T. What can

AVprozaik [17]

Answer:

QT = RT

Step-by-step explanation:

When drawing triangle PQR the perpendicular bisector cuts the triangle in half, which results in two sides that are congruent. This makes QT and RT congruent.

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3 years ago

Read 2 more answers

Choose all that correctly solve for x.

Tamiku [17]

Answer:

Options: A, B, and C correctly solve for x.

Step-by-step explanation:

A).

$\frac{5}{2} x$ = $\frac{15}{2}$

Multiplying both sides by 2 gives;

5x = 15

x = 15 ÷ 5 = 3

∴ This option correctly solve for x.

B).

x + $\frac{7}{2}$ = 7

x = 7 - $\frac{7}{2}$ = $\frac{14}{2} -\frac{7}{2} = \frac{7}{2}$

∴ This option correctly solve for x.

C).

x + 3 = $\frac{21}{5}$

x = $\frac{21}{5} - \frac{15}{5} = \frac{6}{5}$

But the option give x as 5/6 hence this option does not correctly solve for x.

D).

5x = 11/2

x = 11/2 ÷ 5 = 11/2 × 1/5 = 11/10

But the option gives x as 10/11 so it does not correctly solve for x.

8 0

2 years ago

Fractional indices pls help

bulgar [2K]

Answer:

Formula used :

(a^m)^n = a^(m×n)
a^m × a^n = a^(m+n)

$27 \times {9}^{3x} = {3}^{k} \\ {3}^{3} \times { {(3}^{2}) }^{3x} = {3}^{k} \\ {3}^{k} = {3}^{3} \times {3}^{(2 \times 3x)} \\ {3}^{k} = {3}^{3} \times {3}^{6x} \\ {3}^{k} = {3}^{(6x + 3)} \\ \boxed{k = 6x + 3}$

<u>k = (6x+3)</u> is the right answer.

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2 years ago

The cell membrane in an animal cell contains the master plan in cells activities

larisa86 [58]

Answer:

Both plant and animal cells can have endoplasmic reticulum. Both plant and animal cells can have mitochondria. In animal cells, chromosomes contain the master plan for cell activities and cell development. The cell membrane controls which substances enter and leave a plant cell

Step-by-step explanation:

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2 years ago