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photoshop1234 [79]
3 years ago
13

Lenore’s dog gave birth to a litter of 9 puppies. Two of the puppies are male. Write ratios for the following: Number of female

puppies to the total number of puppies
Mathematics
2 answers:
serious [3.7K]3 years ago
5 0

Answer:7:9


Step-by-step explanation:

Subtract 9-2 to get the # of female puppies, them write the ratio of female puppies to total puppies

Pavel [41]3 years ago
3 0

Answer:


Step-by-step explanation:

Alright, so Lenore's dog gave birth to 9 puppies. You know the total from just this alone. Now, two are male. The ratio is 7:9, 2 of the puppies are male and all together are 9 (meaning, there are 2 male puppies and 7 are female). Hope this helps!

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In a G.P the 3rd term is 4 times the 1st term and the sum of the 2nd term and the 4th term is 30.find the common ratio,find the
STALIN [3.7K]

Answer:

the common ratio is either 2 or -2.

the sum of the first 7 terms is then either 765 or 255

Step-by-step explanation:

a geometric sequence or series of progression (these are the most common names for the same thing) means that every new term of the sequence is created by multiplying the previous term by a constant factor which is called the common ratio.

so,

a1

a2 = a1×f

a3 = a2×f = a1×f²

a4 = a3×f = a1×f³

the problem description here tells us

a3 = 4×a1

and from above we know a3 = a1×f².

so, f² = 4

and therefore the common ratio = f = 2 or -2 (we need to keep that in mind).

again, the problem description tells us

a2 + a4 = 30

a1×f + a1×f³ = 30

for f = 2

a1×2 + a1×2³ = 30

2a1 + 8a1 = 30

10a1 = 30

a1 = 3

for f = -2

a1×-2 + a1×(-2)³ = 30

-10a1 = 30

a1 = -3

the sum of the first n terms of a geometric sequence is

sn = a1×(1 - f^(n+1))/(1-f) for f <>1

so, for f = 2

s7 = 3×(1 - 2⁸)/(1-2) = 3×-255/-1 = 3×255 = 765

for f = -2

s7 = -3×(1 - (-2)⁸)/(1 - -2) = -3×(1-256)/3 = -3×-255/3 =

= -1×-255 = 255

4 0
2 years ago
Factor 2x^2-4x-30 completely
Elza [17]
2x² - 4x - 30
2(x²) - 2(4x) - 2(15)
2(x² - 4x - 15)
4 0
3 years ago
NEED ANSWER ASAP<br> MARKING BRAINLIEST
just olya [345]

Answer:

b \times 3 < 200 \\ i \: don't \\ have \: a steric \:

7 0
3 years ago
Are the data shown in this line plot skewed left, skewed right, or not skewed?
alukav5142 [94]
Not skewed, I can tell dawgggg ooooohhhhh and I’m wasted
4 0
3 years ago
25m + 100 - 24m - 75 = 68.
Maksim231197 [3]

25m+100−24m−75=68

Step 1: Simplify both sides of the equation.

25m+100−24m−75=68

25m+100+−24m+−75=68

(25m+−24m)+(100+−75)=68(Combine Like Terms)

m+25=68

m+25=68

Step 2: Subtract 25 from both sides.

m+25−25=68−25

m=43

Answer:

m=43

8 0
2 years ago
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