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tino4ka555 [31]
3 years ago
13

HELP!!!!!!!!!!!!!!!!!!!!! What is the product of –3 and 5? -15 -8 8 15

Mathematics
2 answers:
nikitadnepr [17]3 years ago
7 0

-3 x 5

= -15

answer: -15

m_a_m_a [10]3 years ago
6 0

Answer:

-15

Step-by-step explanation:

Trust

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What annual rate of interest is required to triple an investment in 7 years if it were compounded quarterly?
Jobisdone [24]

Answer:

Option C) 16.01%

Step-by-step explanation:

we know that    

The compound interest formula is equal to  

A=P(1+\frac{r}{n})^{nt}  

where  

A is the Final Investment Value  

P is the Principal amount of money to be invested  

r is the rate of interest  in decimal

t is Number of Time Periods  

n is the number of times interest is compounded per year

in this problem we have  

t=7\ years\\P=\$x\\A=\$3x\\n=4  

substitute in the formula above  

3x=x(1+\frac{r}{4})^{4*7}  

3=(1+\frac{r}{4})^{28}  

Apply log both sides

elevated both sides to 1/28

\sqrt[28]{3}=(1+\frac{r}{4})

Multiply by 4 both sides to remove fraction

4\sqrt[28]{3}=4+r

subtract 4 both sides

r=4\sqrt[28]{3}-4

r=0.1601

convert to percentage

r=0.1601*100=16.01\%

4 0
3 years ago
Are any of these in a 1:2:1 ration form? If so how do you know? Will mark as B.A
marysya [2.9K]

Answer:

No, none of these are in a 1:2:1 ratio form. To find out we simply divide the first number by the original number, then multiply the other original numbers by what we just got to find out if it works.

Let's try #1.

3/1 = 3. 2(3) = 6. We now already know that #1 is incorrect because it says 8 instead of 6.

#2 and #3

We can tell these are both wrong because the first and last number have to equal the same, but in these they are different.

Hope this helps you! :)

4 0
3 years ago
PLEASE HELP ASAP 9TH GRADE MATH AND I NEED HELP, 15 POINTS AND BRAINLIST HELPPPP
Sunny_sXe [5.5K]

Answer:

x = 40°

Step-by-step explanation:

Given that ∠SRT ≅ ∠STR

Then ∠STR = 20

∠STR  and ∠STU are what you call supplementary angles. This means that the sum of their measurements is equal to 180° because they form a straight line.

So if:

∠STR + ∠STU = 180°

m∠STU = 4x

m∠STR = 20

Then:

4x + 20° = 180°

Now we solve for x:

4x + 20 = 180\\\\Subtract\;20\;from\;both\;sides\;of\;the\;equation\\\\4x + 20 - 20 = 180 - 20\\4x = 160\\\\Divide\;both\;sides\;of\;the\;equation\;by\;4\\\\\dfrac{4x}{4}=\dfrac{160}{4}\\\\x = 40

x = 40°

8 0
3 years ago
What is the y-intercept of y= -.25 + 2?
sp2606 [1]

Answer:

2 (if the -.25 has an x after it)

If not 1.75

4 0
3 years ago
Read 2 more answers
Solve the inequality<br> x/4.5 &lt; 12
Aloiza [94]

Answer:

x<54

Step-by-step explanation:

5 0
3 years ago
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