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katovenus [111]
2 years ago
11

Pl help it’s for a grade

Mathematics
2 answers:
Virty [35]2 years ago
5 0

Answer:

r^{2}+6r+9=(r+3)^{2}  \\m^{2}-10m+25=(m-5)^{2}

Step-by-step explanation:

Only !

frosja888 [35]2 years ago
4 0

Answer:

A,d,e not sur tho

Step-by-step explanation:

You might be interested in
How many positive integers between 1000 and 9999 inclusive
bekas [8.4K]

Answer:

Step-by-step explanation:

a.

first number is  1000-1+9=1008

9)1000(1

    9

-------

     10

       9

    -----

       10

         9

       ----

         1

       ----

last number is 9999

9| 9999

  ---------

    1111 |0

    --------

9999=1008+(n-1)9

9999-1008=(n-1)9

n-1=8991/9=999

n=999+1=1000

b.

first digit=1000

last digit=9999-1=9998

2 |9999

  ---------

  |4999|1

9998=1000+(n-1)2

(n-1)2=9998-1000=8998

n-1=4499

n=4499=1=5000

c.not sure

d.

total  numbers=9000

9999=1000+(n-1)1

9999-1000=n-1

n=8999+1=9000

numbers divisible by 3=3000

first number=1002

last number=9999

9999=1002+(n-1)3

(n-1)3=9999-1002=8997

n-1=2999

n=2999+1=3000

numbers not divisible by 3=9000-3000=6000

e.

numbers divisible by 5=1800

first number=1000

last number=9995

9995=1000+(n-1)5

(n-1)5=9995-1000=8995

n-1=1799

n=1799+1=1800

numbers divisible by 7=1286

7 | 1000

  ---------

  |  142-6

1000-6+7=1001

7 | 9999

  |---------

    1428-3

9999-3=9996

first digit=1001

last digit=9996

9996=1001+(n-1)7

(n-1)7=9996-1001=8995

n-1=1285

n=1285+1=1286

numbers divisible by 35=257

first digit=1015

35 ) 1000 ( 28

        70

       ----

        300

        280

        ------

           20

           ---

1000-20+35=1015

35)9999(285

     70

    ----

     299

     280

     -----

        199

        175

        ----

          24

         ----

last digit=9999-24=9975

9975=1015+(n-1)35

(n-1)35=9975-1015=8960

n-1=8960/35=256

n=257

reqd. numbers=1800+1286-257=3019

7 0
3 years ago
Bridget drives at a speed of 60 miles per hour. How long will it take to drive 270 miles?
Mademuasel [1]

Answer:

4 hours and 30 minutes.

Step-by-step explanation:

270÷60=4.5

3 0
3 years ago
Read 2 more answers
D/dx 3^x= <br>Find the derivative <br>​
gregori [183]

Differentiate using the exponential rule, which determines that \bf{\frac{d}{dx}[a^{x}]  } is \bf{a^{x} \ In(a) } when a=3.

\boldsymbol{ 3^{x} \ In(3) \ \to \ \ \ Answer }

Therefore, the correct option is "E". You just have to remove the parentheses.

\red{\boxed{\green{\boxed{\boldsymbol{\purple{Pisces04}}}}}}

4 0
1 year ago
Mr. Gurney purchased 3 dozen
DedPeter [7]
If mr Gurney purchased 5 dozen eggs it would be 9.55
8 0
3 years ago
A person 44​-ftft tall casts a shadow 1313​-ftft long. at the same​ time, a nearby tree casts a shadow 3434​-ftft long. find the
3241004551 [841]
The ratio of height : shadow =44/1313

Therefore height of the tree,x=3434*(44/1313)
=115.08 ft

If you meant 13 and 34 as the length of shadows respectively, then also x=115.08 ft
6 0
3 years ago
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