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2 years ago

9

Describe the number 78 in two different ways using tens and ones

1 answer:

zepelin [54]2 years ago

4 0

7tens8ones
6tens18ones
5tens28ones
4tens38ones
3tens48ones
2tens58ones
1tens68ones
0tens78<span>ones</span>

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M is between N and O . MO = 15, and MN = 76. Find NO

I am Lyosha [343]

Answer:

<h2> 91 </h2>

Step-by-step explanation:

N___________________<u>M</u>_______O

76 15

NO = MN + MO = 76 + 15 = 91

8 0

3 years ago

Quinn has $31,700 in a savings

Masteriza [31]

Answer:

she will earn $6,657 in interest in 3 years

6 0

2 years ago

Find the midpoint of A and B where A has coordinates (2,9)and B has coordinates (7,4)

valkas [14]

Answer:(4.5, 6.5)

step-by-step explanation: this is the formular for finding a midpoint of a line.

<u>midpoint=x1+y1?|/2 ,x2+y2/2</u>

3 0

3 years ago

Read 2 more answers

Find S12 for geometric series: (-7.5) + 15 + (-30) + ...

kolezko [41]

Answer:

S12 for geometric series: (-7.5) + 15 + (-30) + ... would be: 10237.5

Step-by-step explanation:

Given the sequence to find the sum up-to 12 terms

$(-7.5) + 15 + (-30) + ...$

As we know that

A geometric sequence has a constant ratio 'r' and is defined by

$a_n=a_1\cdot r^{n-1}$

$\mathrm{Compute\:the\:ratios\:of\:all\:the\:adjacent\:terms}:\quad \:r=\frac{a_{n+1}}{a_n}$

$\frac{15}{\left(-7.5\right)}=-2,\:\quad \frac{\left(-30\right)}{15}=-2$

$\mathrm{The\:ratio\:of\:all\:the\:adjacent\:terms\:is\:the\:same\:and\:equal\:to}$

$r=-2$

$\mathrm{The\:first\:element\:of\:the\:sequence\:is}$

$a_1=\left(-7.5\right)$

$a_n=a_1\cdot r^{n-1}$

$\mathrm{Therefore,\:the\:}n\mathrm{th\:term\:is\:computed\:by}\:$

$a_n=\left(-7.5\right)\left(-2\right)^{n-1}$

$a_n=-\left(-2\right)^{n-1}\cdot \:7.5$

$\mathrm{Geometric\:sequence\:sum\:formula:}$

$a_1\frac{1-r^n}{1-r}$

$\mathrm{Plug\:in\:the\:values:}$

$n=12,\:\spacea_1=\left(-7.5\right),\:\spacer=-2$

$=\left(-7.5\right)\frac{1-\left(-2\right)^{12}}{1-\left(-2\right)}$

$=-7.5\cdot \frac{1-\left(-2\right)^{12}}{1+2}$

$\mathrm{Multiply\:fractions}:\quad \:a\cdot \frac{b}{c}=\frac{a\:\cdot \:b}{c}$

$=-\frac{-30712.5}{1+2}$ ∵ $\left(1-\left(-2\right)^{12}\right)\cdot \:7.5=-30712.5$

$=-\frac{-30712.5}{3}$

$=\frac{30712.5}{3}$

$=10237.5$

Thus, S12 for geometric series: (-7.5) + 15 + (-30) + ... would be: 10237.5

5 0

3 years ago

What is the midpoint of line AC

pishuonlain [190]

Answer:

N/A

Step-by-step explanation:

What is line AC, was there supposed to be a picture?

4 0

2 years ago