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Zanzabum
3 years ago
10

If DF = 61 and EF = 18, find DE

Mathematics
1 answer:
vova2212 [387]3 years ago
5 0

Answer:

43 i jus subtracted

Step-by-step explanation:

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Misha wrote the quadratic equation 0=-x2+4x-7 in standard form. what is the value of c in her equation
Masteriza [31]

Answer:

Final answer is c=-7.

Step-by-step explanation:

Given equation is 0=-x^2+4x-7.

Now question says that Misha wrote the quadratic equation 0=-x2+4x-7 in standard form. Now we need to find about what is the value of c in her equation.

We know that standard form of quadratic equation is given by ax^2+bx+c=0.

compare given equation with the standard form, we find that -7 is written in place of +c

so that means +c=-7

or c=-7

Hence final answer is c=-7.

8 0
3 years ago
Can someone help me with these questions <br><br> You have to write then in a expression
cupoosta [38]

Answer:

(11)q/2+8

(13)9x

(15)9 + (y × 3)

3 0
3 years ago
3. Consider the sequence,-8, -5, -2, 1, ...
Naddik [55]

Answer:

a) a_n=3\,n-11

b) a_{20}=49

c) term number 17 is the one that gives a value of 40

Step-by-step explanation:

a)

The sequence seems to be arithmetic, and with common difference d = 3.

Notice that when you add 3 units to the first term (-80, you get :

-8 + 3 = -5

and then -5 + 3 = -2 which is the third term.

Then, we can use the general form for the nth term of an arithmetic sequence to find its simplified form:

a_n=a_1+(n-1)\,d

That in our case would give:

a_n=-8+(n-1)\,(3)\\a_n=-8+3\,n-3\\a_n=3n-11

b)

Therefore, the term number 20 can be calculated from it:

a_{20}=3\,(20)-11=60-11=49

c) in order to find which term renders 20, we use the general form we found in step a):

a_n=3\,n-11\\40=3\,n-11\\40+11=3\,n\\51=3\,n\\n=\frac{51}{3} =17

so term number 17 is the one that renders a value of 40

5 0
3 years ago
Which is a quantitative variable?
ira [324]

Answer:

Variables that have are measured on a numeric or quantitative scale. Ordinal, interval and ratio scales are quantitative.

Step-by-step explanation:

Do you need help with a problem?

Or no?

3 0
3 years ago
Read 2 more answers
Jessica rides the bus 8 and 4/5 miles each day what is the total number of miles she rides in 21 days?
Masja [62]

Answer:

= 184/5

Step-by-step explanation:

converting mixed numbers to fractions, our initial equation becomes,

44/5 × 2/11

Applying the fractions formula for multiplication you get,  

= 924/5

Simplifying 924/5, the answer is

=184 4/5

5 0
3 years ago
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